
Vigilance
Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.
Sacrifice Boromir: Creatures you control gain indestructible until end of turn. The Ring tempts you.
Boromir, Warden of the Tower has 6 printings, first in The Lord of the Rings: Tales of Middle-earth (2023). EDHREC ranks it #884 among Commander cards. It appears most in Aragorn, the Uniter decks (9,259 on EDHREC). It has 9 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.