Urza, Lord High Artificer + Corridor Monitor + Retraction Helix + 1 more
Infinite ETB, Infinite LTB, Infinite storm count
Cast Retraction Helix by paying , targeting a creature you control that doesn't have summoning sickness.
Cast Corridor Monitor by paying due to The Water Crystal.
When Corridor Monitor enters, it triggers, untapping the creature targeted by Retraction Helix.
Activate Urza's first ability by tapping Corridor Monitor, adding .
Activate the creature targeted by Retraction Helix by tapping it, returning Corridor Monitor from the battlefield to your hand.
Repeat from step 2.
Component Cards
How It Works
Cast Retraction Helix by paying , targeting a creature you control that doesn't have summoning sickness.
Cast Corridor Monitor by paying due to The Water Crystal.
When Corridor Monitor enters, it triggers, untapping the creature targeted by Retraction Helix.
Activate Urza's first ability by tapping Corridor Monitor, adding .
Activate the creature targeted by Retraction Helix by tapping it, returning Corridor Monitor from the battlefield to your hand.
Repeat from step 2.