Ghave, Guru of Spores + Rosie Cotton of South Lane + Ashnod's Altar
Infinite colorless mana, Infinite creature tokens, Infinite death triggers, Infinite ETB, Infinite LTB, Infinite sacrifice triggers, Infinite +1/+1 counters on creatures you control
Activate Ghave's first ability by paying and removing a +1/+1 counter from it, creating a 1/1 Saproling creature token.
Rosie triggers, putting a +1/+1 counter on Ghave.
Activate Ashnod's Altar by sacrificing the Saproling, adding .
Repeat.
Once you have infinite mana, you may forego sacrificing the Saproling tokens to Ashnod's Altar, and then use Ghave's second ability to put infinite +1/+1 counters on creatures you control.
Component Cards
How It Works
Activate Ghave's first ability by paying and removing a +1/+1 counter from it, creating a 1/1 Saproling creature token.
Rosie triggers, putting a +1/+1 counter on Ghave.
Activate Ashnod's Altar by sacrificing the Saproling, adding .
Repeat.
Once you have infinite mana, you may forego sacrificing the Saproling tokens to Ashnod's Altar, and then use Ghave's second ability to put infinite +1/+1 counters on creatures you control.