Abandoned The Party

Other commander permanents you control have
"When you Venture Into The Dungeon, you can change the room text to; Target creature can't
attack until your next turn" Only once per turn.
{4}: Venture Into The Dungeon. If you control
your Commander &/or you are the Monarch
this effect cost {1} less. Only usable once per turn.
It's {1} less for each differently named dungeon
you've completed.