Ertha Jo, Frontier Mentor + Kenrith, the Returned King + Crystalline Crawler + 1 more
Infinite colored mana, Infinite lifegain triggers, Infinite lifegain, Infinite card draw for any number of players, Return all creature cards from all graveyards to the battlefield under your control, Infinite draw triggers for any number of opponents, Infinite +1/+1 counters on creatures you control
Activate Kenrith by paying , targeting Crystalline Crawler.
Ertha Jo triggers, copying Kenrith's ability, targeting any creature you control.
Resolve both Kenrith abilities, putting a +1/+1 counter on Crystalline Crawler and any creature you control.
Activate Crystalline Crawler by removing a +1/+1 counter from it, adding .
Repeat.
Component Cards
How It Works
Activate Kenrith by paying , targeting Crystalline Crawler.
Ertha Jo triggers, copying Kenrith's ability, targeting any creature you control.
Resolve both Kenrith abilities, putting a +1/+1 counter on Crystalline Crawler and any creature you control.
Activate Crystalline Crawler by removing a +1/+1 counter from it, adding .
Repeat.