Impact Tremors or Purphoros, God of the Forge - easy win conditions from token floods
Ones like Part the Waterveil that exile themselves are weaker since you cant get to any tricks with cards like Eternal Witness, but getting a large creature to swing with on your extra turn makes up for it
You can really play havoc with combat math, and suddenly, a lot of creatures that were supposed to stay alive are falling, all while you gain a bit of life
I know Old School cards are more expensive nowadays, but these cards signed by Richard Garfield earned a tremendous premium
Whenever this creature deals combat damage to a player, they lose half their life, rounded up
This is especially true for Commanders that want to cast massive spells like Ovika, Enigma Goliath