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Because at that point it becomes a 2-card combo and is no more overpowered than other 2 card combos or other search engines. When you need to run a critical mass of other cards to make a card good,...

I'd say the huge difference between Vamp and Imperial is the number of turns that are not yours between casting and getting the tutored card.

With Vamp, you can do it EOT or in your own upkeep, so...

I've played Grim Long and other combo at various times in Vintage's history and have success playing Imperial Seal in both Vintage and EDH combo decks. Just because I like it in those decks, doesn't...

Just because a card is banned doesn't mean it's good in every deck. Recurring Nightmare would suck in this one ;-)

1-v-1 is much faster and bannings reflect attempts to Stifle combo. It's not...

Cromat:
keep RWRW open: 3 turn clock
keep UG open: practically can't be killed and can block anything
keep UR/WB open: can't be profitably blocked

Progenitus:
0: 3 turn clock
0: practically...

Keep in mind Thassa also makes Gideon/Cromat/stolen creatures unblockable and is indestructible. So unlike Scroll Rack or Crystal Ball or whatever, she'll survive enemy Oblivion Stones and such....

Why don't you play some Gods too? They're pseudo-planeswalkers, dodge a lot of the wrathing, can turn sideways once you have multiple PWs on the field.

Thassa, God in particular stands out.
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