All of the recommended cards will be a stronger fit in this deck
Core Colors of Self-Discard
Anytime an opponent casts a spell with mana value equal to that number, or casts a creature with power or toughness equal to that number, that player loses two life and you draw a card
If one of the tokens somehow is under another player's control as the delayed triggered ability resolves, you can't sacrifice that token
There are more things to sacrifice now than ever, from Food tokens to Clues, Treasures, sagas, not to mention the interaction between Cauldron Familiar and Witch's Oven
, , Sacrifice an artifact: Put a +1/+1 counter on each creature you control