Saw in Half + Burnt Offering + Warden of the Eye

Saw in Half

Burnt Offering

Warden of the Eye

How it works

1. Cast Saw in Half by paying 2, destroying Warden of the Eye and creating two token copies of it with base power equal to half the destroyed creature's power and base toughness equal to half the destroyed creature's toughness, rounding up each time.
2. When the Warden of the Eye tokens enter the battlefield, they trigger, returning Saw in Half and Burnt Offering from your graveyard to your hand.
3. Cast Burnt Offering by paying and sacrificing a Warden of the Eye token, adding plus an additional amount of and/or equal to its mana value minus 2.
4. Repeat.

This clever loop uses Saw in Half to split your original Warden of the Eye into two distinct copies, doubling up its enter-the-battlefield trigger to recurse both Saw in Half and Burnt Offering right back to your hand. From there, you use Burnt Offering to sacrifice one of those Warden of the Eye tokens to fuel your mana pool and net enough resources to cast Saw in Half all over again. Because the tokens enter and leave the battlefield repeatedly to feed the loop, you can continuously repeat the process to generate infinite mana and trigger effects.