mtg oversized dungeon cards Adventures in the Forgotten Realms Factory Sealed Tomb of Annihilation: Oversized -

Xenagos is my co-pilot

702.139b: If a companion ability refers to your starting deck, it refers to your deck after youve set aside any sideboard cards

Its also incredibly rare, appearing in less than 1% of English-language Collector Boosters according to the official collecting article for the set

I really like this alongside the token making triggers like the Pyromancer, Talrand, Sky Summoner, Third Path Iconoclast and Monastery Mentor since you can ensure they get their attacks in through defenses by goading potential blockers and then forcing them to attack others for another round of attacks

Chances are, someone is gonna let you connect with this if you promise to bolt something they dont like

or any of the infinite card drawing combos