Bristly Bill, Spine Sower + Devoted Druid

Prerequisites

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Steps

1. 1Activate Bristly Bill by paying , doubling the number of +1/+1 counters on each creature you control.
2. 2Activate Devoted Druid's first ability by tapping it, adding .
3. 3Activate Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
4. 4Repeat from step 2 four additional times.
5. 5Repeat from step 1.

Effects

• Infinite +1/+1 counters on certain creatures
• Infinite green mana