Shameless Charlatan + Accomplished Alchemist + Horseshoe Crab

Shameless Charlatan

Accomplished Alchemist

Horseshoe Crab

How it works

1. Activate your commander by paying 2, causing it to become a copy of Accomplished Alchemist until end of turn.
2. Activate your commander's second ability by tapping it, adding at least eight .
3. Activate your commander by paying 2, causing it to become a copy of Horseshoe Crab until end of turn.
4. Activate your commander by paying , untapping it.
5. Repeat.