Putrid Goblin + First Day of Class + Viscera Seer

Putrid Goblin

First Day of Class

Viscera Seer

How it works

1. Cast First Day of Class by paying 1, causing all creatures that enter the battlefield under your control this turn to get an additional +1/+1 counter put on it.
2. Activate Viscera Seer by sacrificing Putrid Goblin.
3. Putrid Goblin's persist ability triggers, returning itself from your graveyard to the battlefield with a -1/-1 counter on it.
4. Putrid Goblin enters the battlefield, triggering First Day of Class, putting a +1/+1 counter on Putrid Goblin.
5. Resolve the Viscera Seer ability from step 2, causing you to scry 1.
6. Repeat from step 2.