Eagle Vision
Sorcery
Freerunning 
(You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.)
Draw three cards.
No mark remains hidden and no secret can be kept from an Assassin possessed of this unique gift.
Kim Sokol
Assassin's Creed (ACR)
• #17Rulings
Once an Assassin creature or commander you control deals combat damage to a player in a turn, you can cast spells for their freerunning costs for the rest of that turn. It doesn’t matter what happens to that Assassin or commander after that.
(wotc • 2024-07-05)
Rulings
Once an Assassin creature or commander you control deals combat damage to a player in a turn, you can cast spells for their freerunning costs for the rest of that turn. It doesn’t matter what happens to that Assassin or commander after that.
(wotc • 2024-07-05)