Chain of Acid + Karok Wrangler

Chain of Acid

Karok Wrangler

How it works

1. Cast Chain of Acid by paying 3, targeting an indestructible noncreature permanent you control.
2. Karok Wrangler triggers, putting a +1/+1 counter on a creature you control.
3. Resolve Chain of Acid, destroying nothing and causing you to copy Chain of Acid, targeting an indestructible noncreature permanent you control.
4. Repeat from step 2.

This clever loop turns Chain of Acid's cascading copy effect into a permanent-pumping engine. By targeting an indestructible noncreature permanent you control, you ensure the spell never actually gets removed while still fulfilling its condition to let its controller copy it. Every time that copy is created, Karok Wrangler triggers off the magecraft ability to pile infinite +1/+1 counters onto your creatures.