Serra Paragon + Displacer Kitten + Dire Mimic + Semblance Anvil

Serra Paragon

Displacer Kitten

Dire Mimic

Semblance Anvil

How it works

1. Activate Dire Mimic's first ability by tapping and sacrificing it, adding one mana of any color.
2. Cast Dire Mimic from your graveyard using Serra Paragon's ability by paying 0.
3. Displacer Kitten triggers, blinking Serra Paragon.
4. Activate Dire Mimic's first ability by tapping and sacrificing it, adding one mana of any color.
5. Dire Mimic leaves the battlefield, triggering its ability.
6. In response, repeat from step 2.
7. Once you have infinite mana, resolve all Dire Mimic abilities, causing you to exile it from your graveyard if it's in your graveyard and gain infinite life.