Originally Posted by
Agrippa91
The reason why I have the additional Tropical in my build is because while Abrupt Decay is a great card our mana just doesn't allow it really to be sideboarded against decks like Delver and other Goyf decks which is just a big upside you can get. Tarmogoyf is a problem for this deck since it's like the only creature that stops Young Pyro that can't be bolted, often forcing us to chump-block, not being able to accumulate an army. Also the extra land is really nice against mana denial decks like Delver-, Trinisphere- and Thalia-Decks.
In general I only bring Cabal Therapy in against Combo (also Elves) or slow midrange decks (Shardless, Jund, Goblins). Hitting with it in a delver-mirror is nice, but too often it's a dead card there. Stifle is just a better card there imo, vs BUG "Hymn" Delver it also serves the purpose of keeping the opponent off BB for Hymn to Tourach.
I tested against the Eldrazi deck a fair share and I figured they're pumping out their cards too quickly so you'd rather have actual Removal and Cantrips there, concerning yourself with the board because often times the plan is to manascrew them.
Here are some examples for sideboarding with my sideboard:
1x Surgical Extraction
1x Pithing Needle
1x Invasive Surgery
1x Pyroblast
1x Hydroblast
4x Cabal Therapy
3x Abrupt Decay
1x Krosan Grip
1x Virtue's Ruin
1x Tropical Island
Note that in almost all remotely fair matchups I'm boarding out forces so that I have more spells to make YP worthwhile, you really want as many cards as possible when you cast him.
Delver-matchups:
UR-Delver (POP-Burn-version):
-4 Gitaxian Probe
-2 Force of Will (other than in the other Delver versions I'd rather have more tempo and less lifeloss, thus cutting all Probes instead of all Forces)
-1 Volcanic Island
+1 Invasive Surgery (Forked Bolt can be a real blowout)
+1 Pyroblast
+1 Hydroblast
+3 Abrupt Decay (since they're playing PoP they very likely don't play Wasteland, so no Tropical here. Even if I still have Shamans).
+1 Tropical Island (some variations run Wasteland and PoP and some run also Stifle, I just never can be sure here so I'd rather have 2 of each Dual. Also lifegain via DRS can be important).
I'm leaving in the Wastelands because with Stifle he often times has to fetch for Duals to get all his colors anyways.
RUG-Delver:
-4 Force of Will
-3 Gitaxian Probe
+1 Invasive Surgery (Forked Bolts and Rough/Tumble are blowouts)
+1 Pyroblast
+1 Hydroblast (see Invasive Surgery)
+3 Abrupt Decay
+1 Tropical Island
BURG-Delver:
- They're very similar to BUG and I don't have specific YP-hate besides Hydroblast, so it's the same thing like RUG-Delver
BUG "Stifle" Delver:
-4x Force of Will
-1x Gitaxian Probe
+1 Pyroblast
+3 Abrupt Decay
+1 Tropical Island
Imo the inferior deck vs us compared to Hymn-Delver, we just execute the stifle-plan better with more efficient removal. Since they're not that aggressive I can actually afford to leave in 3 Probes, it's not like they're gonna bolt us to death.
BUG "Hymn" Delver:
-4 Force of Will
-2 Gitaxian Probe
+1 Invasive Surgery
+1 Pyroblast
+3 Abrupt Decay
+1 Tropical Island
The one Invasive Surgery might seem narrow, but it actually allows us to stick to our reactive plan of stifling and keeping him off BB when we also have a card against his discard. Plus when you're ahead lategame countering a ponder can be gamewinning.
non-combo-Decks that are not falling into the Stifle-trap against us that easily:
Burn:
-4 Wasteland
-4 Gitaxian Probe
-1 Stifle (it can be decent stifling lands and Rift Bolts while pitching to FoW, but it's definitely the worst card in the deck still)
+1 Invasive Surgery (really just getting any spell 1:1 counts, Burn is all about massing up spells)
+1 Hydroblast (MVP ;D)
+4 Cabal Therapy (see below)
+3 Abrupt Decay (yeah it's clunky, but removal is removal)
Definitely the wackiest post-sideboard deck I play with, I just bring in a bunch of cards, given that Burn isn't that good against us anyways that's decent though. Cutting the probes but putting in Therapies might seem weird, but you really don't want to waste 2 life or mana at any point. PoP or Fireblast are pretty safe bets though while their hand doesn't change via brainstorm so that's nice.
Eldrazi:
-3 Gitaxian probe (information is nice, but not necessary)
-4 Stifle (you can cycle [Thought-Knot-Seer, Matter Reshaper, Wasteland] them or pitch them to FoW preboard, but that's really not where you want to be
+3 Abrupt Decay
+1 Krosan Grip
+1 Tropical Island (with Taxing effects and the lack of Stifle for Wasteland you really want an extra land postboard)
I've been unimpressed by this deck so far, besides the big Eldrazi can often times still be dazed even if they have 2 sol lands out already. Out-tempoed them most of the time.
Merfolk:
-4 Stifle (does nothing besides preventing Silvergill adept triggers and Vial)
-4 FoW (not necessary, bad against Cavern. Also lower bluecount postboard)
-2 Daze (ok-ish card, I'd leave them in if we didn't have so many better cards that are sure to get something)
+1 Pithing Needle (Vial, Mutavault, Jitte)
+1 Pyroblast
+4 Cabal Therapy (nice because they don't have Brainstorm and Silvergill Adept reveals cards! Otherwise you just name True-Name every time)
+3 Abrupt Decay (doesn't matter if they have postboard Chalice of the Void)
+1 Krosan Grip (they just don't play around this card with Vial against a Grixis deck)
Death & Taxes:
-4 FoW
-4 Daze (with a bit of luck they play around it, otherwise it's too bad after the first few turns)
-3 Stifle (it's nice to stifle a Wasteland and it can be nice to stifle RiP or Batterskull so having 1 is ok, otherwise it's just not worth a card)
+1 Pithing Needle (Mother, Vial, Port, sometimes Equipment)
+4 Cabal Therapy (blind name Thalia or get Equipment after Stoneforge, the rest is ez)
+3 Abrupt Decay
+1 Krosan Grip (same as Merfolk, they don't see it coming)
+1 Virtue's Ruin
+1 Tropical Island (nice against Taxing effects)
Elves:
-4 Daze
-4 Stifle
+1 Invasive Surgery
+4 Cabal Therapy (note that they're often times boarding out GSZ and Natural order, so rather name Wirewood Symbiote blind)
+3 Abrupt Decay (more removal)
Miracles:
-4 Wasteland
-4 Daze
-2 FoW
-2 Bolt
+1 Pithing Needle
+1 Invasive Surgery
+1 Pyroblast
+4 Cabal Therapy
+3 Abrupt Decay
+1 Krosan Grip
+1 Virtue's Ruin
Well, it's 12 cards against Miracles. It's not that I really wanted that much cards (besides Decay) but rather that there's just a lot to hate (lockpieces, white creatures, blue spells, full hands). Ok I admit it, I hate Miracles and want them gone from this world.
4c-Loam:
-4 Daze
-4 Gitaxian Probe
+1 Surgical Extraction (our deck is quite bad against Punishing Fire)
+1 Invasive Surgery (Life from the loam)
+3x Abrupt Decay
+1x Krosan Grip
+1x Virtue's Ruin (KotR, postboard Thalia)
+1x Tropical Island (good since they want to cut us off mana)
Stifle is just really good against 4c-loam because it slows down their Waste-Engine and messes with Lili, KotR and Fire). Therapy on the other hand doesn't have any targets to mess with once the game goes into topdeck-mode (which is rather quick). Plus they play a lot of lands you can't mess with. Speaking of which:
Lands:
-4 Daze
-4 Probe
-1 Bolt
1 Pithing Needle
1 Surgical Extraction
1 Invasive Surgery
1 Hydroblast
3 Abrupt Decay
1 Krosan Grip
1 Tropical Island
Our worst matchup, but winnable if we get lucky.
Jund:
-4 FoW
-4 Daze
-1 Volcanic Island
+1 Surgical Extraction
+1 Invasive Surgery
+3 Cabal Therapy
+3 Abrupt Decay
+1 Tropical Island I'd rather have 2 Trop 2 Volc instead of 3-1 even though they play a max of 3 Wastes and no cantrips.
Edit: I guess the plan should be to color-screw them instead of leaning on Dazes that can be dead to maximize the impact of our cards in the midgame.
Shardless BUG:
-4 Force of Will
-4 Daze
-1 Volcanic Island (they normally only play 2 Wastelands)
1 Invasive Surgery
1 Pyroblast
3 Cabal Therapy
3 Abrupt Decay
1 Tropical Island
Compared to Jund Stifle seems even better vs. BUG because of Ancestral Visions besides the Cascade triggers and Planeswalkers.
I must damit that I'm still not sure about the exact number of Therapy, Daze and Stifle vs. Shardless and Jund, both are rather bad matchups.
Generally I can say that in many matchups you have to decide between Therapy and Stifle. Therapy and Stifle give this deck a really good chance though against fair decks that don't rely on a fetch-mana-base so you nor want Stifle nor Force of Will.
Edit: The reason for Hydroblast is more:
1. Having a counter for Past in Flames often times makes my Stifles better vs. Storm
2. Pyroclasm, Forked Bolt and Rough/Tumble are cards that x-for-1 me a lot
3. I don't have any specific other hate against opposing YPs
4. Countering a timely punishing fire (which is also really good against this deck) can be the key to eating it with DRS. It's also nice against Gamble in Lands
5. I consider my deck suboptimal against Burn, so this is a nice addition
6. Untapping with a YP is awesome. I could play a Dispel to also hit Swords, but against White decks I already bring in a lot against Stoneforge etc., besides Dispel doesn't have all these other nice applications