Twilight Drover + Ashnod's Altar + Gemstone Array

Twilight Drover

Ashnod's Altar

Gemstone Array

How it works

1. Activate Twilight Drover by paying 2 and removing a +1/+1 counter from it, creating two 1/1 Spirit creature tokens.
2. Activate Ashnod's Altar twice by sacrificing the Spirit tokens, adding CCCC.
3. When the Spirits die, Twilight Drover triggers twice, putting two +1/+1 counters on Twilight Drover.
4. Activate Gemstone Array's first ability by paying 2, putting a charge counter.
5. Activate Gemstone Array's second ability by removing a charge counter from it, adding .
6. Repeat.