Yenna, Redtooth Regent + Ashnod's Altar + Jump Scare + Corridor Monitor

Yenna, Redtooth Regent

Ashnod's Altar

Jump Scare

Corridor Monitor

How it works

1. Cast Jump Scare by paying , targeting Corridor Monitor.
2. Activate Yenna by paying 2 and tapping it, creating a token copy of Corridor Monitor.
3. When the Corridor Monitor token enters, it triggers, untapping Yenna.
4. Activate Ashnod's Altar by sacrificing the Corridor Monitor token, adding CC.
5. Repeat from step 2.

By using Jump Scare to temporarily turn Corridor Monitor into an enchantment, we give Yenna, Redtooth Regent a valid, non-legendary target to endlessly copy. Each time the Corridor Monitor token enters the battlefield, its ability triggers to untap Yenna, allowing you to feed the fresh token to Ashnod's Altar for mana while keeping the loop going. This continuous cycle generates an endless stream of sacrifices and triggers to fuel your victory.