Grixis Doom Show

[kinda]

I've been playing show and tell+doomsday for a bit now off and on but I wanted to find a way to help the Omnitell matchup. I settled on a grixis shell and Iona. Any suggestions welcome! Worldly tutor plus show and tell or doomsday into shelldock Emrakul are the main plans.

Edit: added burning wish

4 young pyromancer
1 grim lavamancer
2 worldly tutor
1 Emrakul
2 Iona
1 gaddock teeg

4 cabal therapy
4 gitaxian probe
3 brainstorm (not as good with limited shuffle effects)
2 ponder
2 duress

3 burning wish
3 doomsday
3 show and tell
4 dark ritual
1 cloud of faeries
1 shelldock isle
1 Lotus petal
1 trickbind

4 city of brass
4 maña confluence
4 gemstone mine
2 grand coliseum
2 undiscovered paradise
2 blackcleave cliffs

Sb:
Meltdown
Show and tell
Doomsday
Pyroclasm
Thoughtseize
Ingot chewer
2 tempting gambit
2 Iona
1 elesh norn
2 boseiju, who shelters
2 duress