Requires

Yenna, Redtooth Regent must be on the battlefield. Chatterfang, Squirrel General must be on the battlefield. Ashnod's Altar must be on the battlefield. Phantatog must be on the battlefield. Mana needed:

Steps

1. Activate Yenna by paying and tapping it, creating a token copy of an Aura you control and a 1/1 Squirrel creature token, then untapping Yenna and causing you to scry 2.
2. Activate Ashnod's Altar by sacrificing the Squirrel, adding .
3. Activate Phantatog's first ability by sacrificing the Aura token, giving Phantatog +1/+1 until end of turn.
4. Repeat.

Results