Cathars' Crusade + Devoted Druid + Flourishing Defenses

Prerequisites

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Steps

1. 1Activate Devoted Druid by tapping it, adding .
2. 2Activate Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
3. 3Flourishing Defenses triggers, creating a creature token.
4. 4When the creature token enters, Cathars' Crusade triggers, putting a +1/+1 counter on each creature you control.
5. 5Repeat.

Effects

• Infinite +1/+1 counters on creatures you control
• Infinite creature ETB
• Infinite creature tokens
• Infinite green mana