Perilous Forays + Tiller Engine + Elfsworn Giant

Perilous Forays

Tiller Engine

Elfsworn Giant

How it works

1. Activate Perilous Forays by paying 1 and sacrificing a creature you control, searching your library for a land card with a basic land type and putting it on the battlefield.
2. When the land enters the battlefield, Elfsworn Giant and Tiller Engine trigger.
3. Resolve the Elfsworn Giant trigger, creating a creature token.
4. Resolve the Tiller Engine trigger, untapping the land.
5. Activate the land by tapping it, adding 1.
6. Repeat.