Yavimaya Bloomsage // Channel + Aetherflux Reservoir + Sprout Swarm

Yavimaya Bloomsage // Channel

Aetherflux Reservoir

Sprout Swarm

How it works

1. Cast a copy of Channel by paying .
2. Activate the ability granted by Channel four times by paying 4 life, adding CCCC.
3. Cast Sprout Swarm with buyback by paying 4 and either tapping a green creature if you're able or paying an additional .
4. Aetherflux Reservoir triggers, causing you to gain 1 life for each spell you've cast this turn.
5. Resolve Sprout Swarm, creating a 1/1 Saproling creature token and returning Sprout Swarm to your hand.
6. Repeat from step 2.