Colfenor, the Last Yew + Gutter Grime + Woe Strider

Colfenor, the Last Yew

Gutter Grime

Woe Strider

How it works

1. Cast the creature card in your hand by paying 0.
2. Either that creature dies as a state-based action due to having zero toughness, or activate Woe Strider by sacrificing that creature.
3. Gutter Grime triggers, putting a slime counter on it and creating a X/X Ooze creature token.
4. Activate Woe Strider by sacrificing the Ooze.
5. When the Ooze dies, Colfenor triggers, returning the creature card from your graveyard to your hand.
6. Resolve the Woe Strider abilities, scrying 1 each time.
7. Repeat.

This clever loop relies on Colfenor, the Last Yew to continuously recycle a creature with lesser toughness from your graveyard back to your hand whenever it dies. Woe Strider acts as the engine's sacrifice outlet, letting you churn through these creatures while leveraging its escape ability and scry triggers to manipulate your library. Meanwhile, Gutter Grime watches every nontoken creature perish, steadily growing larger with slime counters as it floods your board with exponentially massive Ooze tokens.