Requires

Agatha's Soul Cauldron must be on the battlefield. Wildwood Mentor must be on the battlefield. Krark-Clan Ironworks must be on the battlefield. Pentavus must be in exile (exiled by Agatha's Soul Cauldron). Wildwood Mentor has at least one +1/+1 counter on it. Mana needed:

Steps

1. Activate Wildwood Mentor using Pentavus's first ability by paying and removing a +1/+1 counter from it, creating a 1/1 Pentavite artifact creature token.
2. When the Pentavite enters the battlefield, Wildwood Mentor's first ability triggers, putting a +1/+1 counter on itself.
3. Activate Krark-Clan Ironworks by sacrificing the Pentavite, adding .
4. Repeat.
5. Once you have infinite mana, you may forego sacrificing the Pentavites.
6. Once you have infinite creature tokens, you may activate Wildwood Mentor using Pentavus's last ability any number of times.

Results