Adarkar Valkyrie + Intruder Alarm + Woe Strider

Adarkar Valkyrie

Intruder Alarm

Woe Strider

How it works

1. Activate Adarkar Valkyrie by tapping it, targeting another nontoken creature you control.
2. Activate Woe Strider by sacrificing the creature targeted in step 1.
3. When the creature dies, Adarkar Valkyrie triggers, returning the sacrificed creature from your graveyard to the battlefield.
4. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
5. Resolve the Woe Strider ability, causing you to scry 1.
6. Repeat.

This elegant loop transforms the graveyard into a revolving door by anchoring your engine with Adarkar Valkyrie's targeted resurrection ability. By using Woe Strider to instantly sacrifice the creature under the Valkyrie's protection, you immediately trigger the Angel's return effect while setting off Intruder Alarm's global untap trigger with the creature's subsequent entry. This untaps your entire board—crucially freeing Adarkar Valkyrie to tap and repeat the process—while Woe Strider's sacrifice outlet simultaneously lets you filter through your deck with infinite scrys.