Grenzo, Dungeon Warden + Workhorse + Sundering Archaic

Grenzo, Dungeon Warden

Workhorse

Sundering Archaic

How it works

1. Activate Workhorse by removing a +1/+1 counter from it, adding C.
2. Repeat step 1 until Workhorse dies as a state-based action due to having 0 toughness.
3. Activate [[Permanent with "Pay Mana: Put target card from your graveyard on the bottom of your library"]] by paying 2, putting Workhorse from your graveyard onto the bottom of your library.
4. Activate Grenzo by paying 2, putting Workhorse from the bottom of your library into your graveyard, and then putting it onto the battlefield with four +1/+1 counters on it due to its static effect.
5. Repeat.