Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Blasting Station + Relentless Skaabs

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Blasting Station

Relentless Skaabs

How it works

1. Activate Blasting Station by tapping it and sacrificing Relentless Skaabs
2. When Relentless Skaabs dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. When Relentless Skaabs enters, Blasting Station triggers, untapping Blasting Station.
4. Activate Blasting Station by tapping it and sacrificing Relentless Skaabs
5. When Relentless Skaabs dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6. When Relentless Skaabs enters, Blasting Station triggers, untapping Blasting Station.
7. Resolve the Blasting Station abilities from step 1 and 4.
8. Repeat.

This ingenious loop turns a mortal shell into an endless artillery barrage by alternating between immortality mechanics. While Blasting Station serves as both the sacrificial altar and the untapping engine, the real magic happens through the duality of Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight: its back face grants persist to your nontoken creatures, allowing Relentless Skaabs to repeatedly cycle between undying and persist as counter types cancel each other out upon return.