Crystalline Crawler + Saving Grace + Vigor + Pestilence Demon

Prerequisites

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Steps

1. 1Cast Saving Grace by paying , targeting Crystalline Crawler.
2. 2Saving Grace enters the battlefield and triggers, causing all damage that would be dealt to you and to permanents you control this turn to be dealt to Crystalline Crawler instead.
3. 3Activate Pestilence Demon by paying , dealing 1 damage to each opponent and each creature they control, and attempting to deal 1 damage to you and each creature you control.
4. 4Saving Grace redirects that damage to Crystalline Crawler.
5. 5Vigor's replacement effect prevents that damage and puts that many +1/+1 counters on Crystalline Crawler instead.
6. 6Activate Crystalline Crawler's first activated ability by removing a +1/+1 counter, adding .
7. 7Repeat from step 3.

Effects

• Infinite +1/+1 counters on a creature
• Infinite colored mana
• Infinite damage