Ulamog's Dreadsire + Thornbite Staff + Bloodflow Connoisseur

Ulamog's Dreadsire

Thornbite Staff

Bloodflow Connoisseur

How it works

1. Activate Ulamog's Dreadsire by tapping it, creating a 10/10 Eldrazi creature tokens.
2. Activate Bloodflow Connoisseur by sacrificing the Eldrazi token.
3. When the Eldrazi token dies, Ulamog's Dreadsire triggers, untapping Ulamog's Dreadsire.
4. Resolve the Bloodflow Connoisseur ability, putting a +1/+1 counter on it.
5. Repeat.

This clever loop turns Ulamog's Dreadsire into a one-man manufacturing plant for colossal Eldrazi tokens, leveraging Thornbite Staff's triggered ability to untap the Dreadsire every single time a creature bites the dust. By feeding those freshly minted tokens directly to Bloodflow Connoisseur, you turn each iteration into a permanent +1/+1 counter on the Connoisseur while simultaneously satisfying the death condition required to untap your tap-ability engine. Because Thornbite Staff's granted untap trigger fires on *any* creature's demise, sacrificing the token provides both the catalyst for the loop and the fuel to make your sacrificing creature infinitely huge.