Bloodbraid Elf, Qasali Pridemage, Rakdos Charm (which has been performing incredibly well so far), Izzet Charm, Sphinx of the Steel Wind, Olivia Voldaren, Lotleth Troll, Edric Spymaster of Trest, Lightning Helix, Shardless Agent or Geist of Saint Traft all of which are so similar in their power
Without the other part of the card, this plan is simple: block the creature when it would deal more than 3 damage and don't block it when it would do less (all of this mitigated, of course, by when blocking it can kill it)
Equip only as a sorcery.) Artifact - Equipment Artifact (CTRL to add secondary) Creature Ammit Eternal Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.) Whenever an opponent casts a spell, put a -1/-1 counter on this creature
Each of these changes was originally met with skepticism, and some lasted more than others