Blossoming Tortoise + Crackdown Construct + Mishra's Factory

Prerequisites

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Steps

1. 1Activate Mishra's Factory's second ability by paying , causing it to become a 2/2 Assembly-Worker creature in addition to its other types until end of turn.
2. 2Activate Mishra's Factory's second ability by paying .
3. 3Crackdown Construct triggers, giving itself +1/+1 until end of turn.
4. 4Repeat from step 2.

Effects

• Infinitely large creature until end of turn