Drownyard Temple + Ancient Greenwarden + Squandered Resources + Amulet of Vigor

Drownyard Temple

Ancient Greenwarden

Squandered Resources

Amulet of Vigor

How it works

1. Activate Drownyard Temple's first ability by tapping it, adding C.
2. Activate Squandered Resources by sacrificing Drownyard Temple, adding C.
3. Activate Drownyard Temple's last ability by paying 3, returning it from your graveyard to the battlefield tapped.
4. When Drownyard Temple enters the battlefield, Amulet of Vigor triggers twice due to Ancient Greenwarden.
5. Resolve one Amulet of Vigor trigger, untapping Drownyward Temple.
6. Activate Drownyard Temple's first ability by tapping it, adding C.
7. Resolve the remaining Amulet of Vigor trigger, untapping Drownyward Temple.
8. Repeat.