Basking Broodscale + First Day of Class + Yuna, Grand Summoner

Basking Broodscale

First Day of Class

Yuna, Grand Summoner

How it works

1. Cast Basking Broodscale by paying 1.
2. When Basking Broodscale enters, First Day of Class triggers, putting a +1/+1 counter on Basking Broodscale.
3. Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token.
4. When the Eldrazi Spawn enters, First Day of Class triggers, putting a +1/+1 counter on the Eldrazi Spawn.
5. Activate the Eldrazi Spawn by sacrificing it, adding C.
6. When the Eldrazi Spawn dies, Yuna triggers, putting a +1/+1 counter on Basking Broodscale.
7. Repeat from step 3.