Necrotic Ooze + Hardened Scales + Cryptic Trilobite + Farmstead Gleaner + Triskelion

Necrotic Ooze

Hardened Scales

Cryptic Trilobite

Farmstead Gleaner

Triskelion

How it works

1. Pay 1 and tap Necrotic Ooze using the Trilobite's ability to put a +1/+1 counter on it.
2. Hardened Scales doubles this.
3. Remove 2 +1/+1 counters from Necrotic Ooze using the Trilobite's ability to generate 4 for activated abilities.
4. Pay 2 and untap Necrotic Ooze using Farmstead Gleaner's ability and put 2 +1/+1 counters on Necrotic Ooze.
5. You have 2 floating and Necrotic Ooze with 2 counters.
6. Repeat to generate infinite C for activated abilities, and Necrotic Ooze having infinite +1/+1 counters Remove counters from Necrotic Ooze using Triskelion's ability to ping an opponent.
7. Repeat to ping your opponent to death.