Existential Dread - Unleashed (134/219)

[ACTION] Play this on your turn or in showdowns.)
[REPEAT 2] (You may pay the additional cost to repeat this spell's effect.)
[STUN] an attacking unit. If it's already stunned, return it to its owner's hand instead. (A stunned unit doesn't deal combat damage this turn.)

Ships sleeved and toploaded.