Yenna, Redtooth Regent + Second Wind + Thaumatog + Creature that taps for 2+ mana

Prerequisites

• Creature that taps for 2+ mana

Steps

1. 1Activate the mana-producing creature by tapping it, adding at least .
2. 2Activate Yenna by paying and tapping it, creating a token copy of Second Wind attached to the mana-producing creature, then untapping Yenna and causing you to scry 2.
3. 3Activate the Second Wind token's second ability by tapping it, untapping the mana-producing creature.
4. 4Activate Thaumatog by sacrificing the Second Wind token.
5. 5Repeat.

Effects

• Infinite scry
• Infinitely large creature until end of turn