Youll usually see the same patterns: Fix the mana Add more consistent draw Tighten the removal suite Add 24 ways to actually close games Tokens and counts-as resources For Warhammer decks, tokens matter more than usual (Tyranids especially)
To quote, Hello Darkness, my new friend! Steel Apron Recall me telling you that Skarmory EX can take up to -70 DMG thanks to its own tech (-20 DMG) and Jasmine Supporter (-50 DMG)
The other option which is slightly less value but more reliable and cheaper CMC is Gluttonous Slime , this doesn't have the card draw but is an instant speed sac outlet
Endrek Sahr, Master Breeder + Assault Suit Those when triggers can be kind of tricky
Soul-Guide Lantern Soul-Guide Lantern hitting the graveyard twice offers surprising utility
Unfortunately, if youre in the market for a copy of Nahiri, there arent any other printings offering low-cost deals