Yenna, Redtooth Regent + Ordeal of Nylea + Tiller Engine + Phantatog

Yenna, Redtooth Regent

Ordeal of Nylea

Tiller Engine

Phantatog

How it works

1. Activate Yenna by paying 2 and tapping it, creating a token copy of Ordeal of Nylea, then untapping Yenna and causing you to scry 2.
2. Activate Phantatog's first ability by sacrificing the Ordeal of Nylea token.
3. The Ordeal of Nylea token's second ability triggers, causing you to search your library for two basic land cards and put them onto the battlefield tapped.
4. When the lands enter the battlefield, Tiller Engine triggers twice, untapping them.
5. Resolve the Phantatog ability from step 2, giving it +1/+1 until end of turn.
6. Activate the two lands by tapping them, adding 2.
7. Repeat.