Cloudstone Curio + Resolute Reinforcements + Phyrexian Altar + Kaya, Geist Hunter

Cloudstone Curio

Resolute Reinforcements

Phyrexian Altar

Kaya, Geist Hunter

How it works

1. Activate Kaya's second loyalty ability by removing two loyalty counters from it, causing you to double all tokens you make this turn.
2. Cast Resolute Reinforcements by paying 1.
3. When Resolute Reinforcements enters the battlefield, it and Cloudstone Curio trigger.
4. Resolve the Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
5. Resolve the Resolute Reinforcements trigger, creating two 1/1 Soldier creature tokens.
6. When the Soldiers enter the battlefield, Cloudstone Curio triggers twice.
7. Resolve the first trigger, returning Resolute Reinforcements to your hand from the battlefield.
8. Resolve the second trigger, choosing to return nothing to your hand from the battlefield.
9. Activate Phyrexian Altar twice by sacrificing the Soldiers, adding 1.
10. Repeat from step 2.