Requires

Naru Meha, Master Wizard must be in hand. Saw in Half must be in hand. Mana needed:

Steps

1. Cast Saw in Half by paying , targeting any creature.
2. Holding priority, cast Naru Meha by paying .
3. Naru Meha enters the battlefield, copying Saw in Half targeting Naru Meha.
4. Resolve the copy of Saw in Half, destroying Naru Meha 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.
5. Put one of the Naru Meha tokens into your graveyard due to the legend rule.
6. Both Naru Meha tokens enter the battlefield, triggering themselves.
7. Resolve the first Naru Meha trigger, copying Saw in Half targeting the remaining Naru Meha token.
8. Repeat from step 4 an arbitrarily large number of times.
9. Once you have a large amount of Naru Meha triggers on the stack, you may resolve those triggers, copying Saw in Half targeting any creature you control to create infinite token copies of the creature(s).
10. You may also resolve the Naru Meha triggers, copying any other instant and/or sorcery spells on the stack.

Results