Joven and Chandler [Unknown Event] Cat Nightmare you may search your library

you may search your library for a legendary team-up creature

and it's the second or higher chain link in a row to hit

Creatures it was blocking that had become blocked by only that creature this combat become unblocked

Then shuffle your library and put those cards on top of it in any order

Joven and Chandler [Unknown Event] Cat Nightmare you may search your librarySet: Unknown Event Type: Legendary Creature Human Rogue Rarity: Common Backup 2 (When this creature enters the battlefield, put two +1 +1 counters on target creature. If that's another creature, it gains the following abilities until end of turn.) Haste Whenever this creature deals combat damage to an opponent, destroy target artifact that player controls.