Infinite LTB, Infinite ETB, Infinite death triggers
Activate Workhorse by removing a +1/+1 counter from it, adding .
Repeat step 1 until Workhorse dies as a state-based action due to having 0 toughness.
Activate Tomb Trawler by paying , putting Workhorse from your graveyard onto the bottom of your library.
Activate Grenzo by paying , 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.
Repeat.
Component Cards
How It Works
Activate Workhorse by removing a +1/+1 counter from it, adding .
Repeat step 1 until Workhorse dies as a state-based action due to having 0 toughness.
Activate Tomb Trawler by paying , putting Workhorse from your graveyard onto the bottom of your library.
Activate Grenzo by paying , 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.
Repeat.