Yedora, Grave Gardener + Grafted Wargear + Temur Charger + Zendikar's Roil

Yedora, Grave Gardener

Grafted Wargear

Temur Charger

Zendikar's Roil

How it works

1. Activate Grafted Wargear's equip ability by paying 0, attaching it to Temur Charger.
2. If Grafted Wargear was attached to a creature, it triggers, causing you to sacrifice the creature it was attached to.
3. Activate Grafted Wargear's equip ability by paying 0, attaching it to another creature.
4. Grafted Wargear triggers, causing you to sacrifice Temur Charger.
5. When Temur Charger dies, Yedora triggers, returning Temur Charger from your graveyard to the battlefield face down as a Forest land.
6. When Temur Charger enters the battlefield, Zendikar's Roil triggers, creating a 2/2 Elemental creature token.
7. Activate Temur Charger by tapping it, adding .
8. Activate Temur Charger's morph ability by revealing a green card in your hand, turning it face up.
9. Repeat.

This clever loop turns zero-mana equipment into a self-sustaining engine by letting you repeatedly sacrifice Temur Charger to Grafted Wargear's unattachment trigger. Each time the Charger hits the dirt, Yedora, Grave Gardener steps in to resurrect it as a Forest land, which in turn triggers Zendikar's Roil to churn out a 2/2 Elemental token. Because that freshly returned land retains its card types, you can tap it for green mana and use its morph ability to turn it back face up, ready to be sacrificed all over again.