Basking Broodscale + Railway Brawler + Yuna, Grand Summoner

Basking Broodscale

Railway Brawler

Yuna, Grand Summoner

How it works

1. Cast Basking Broodscale by paying 1.
2. When Basking Broodscale enters, Railway Brawler 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, Railway Brawler 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.

This delightfully intricate loop feeds on itself by leveraging Railway Brawler's massive power-scaling counter boosts alongside Basking Broodscale, whose own ability naturally generates Eldrazi Spawn tokens whenever counters land on it. Those very tokens enter the battlefield to feed the Brawler's triggers, only to be sacrificed for mana. Whenever those tokens hit the graveyard with their counters, Yuna, Grand Summoner rescues the momentum by funneling those counter values right back onto Basking Broodscale to restart the entire sequence.