Card name

Great Hall of the Biblioplex

Mana cost

None

Mana value

0

Type

Land

Rarity

rare

Set

Secrets of Strixhaven Promos (PSOS)

Collector number

257p

Artist

Constantin Marin

Official rulings

2026-03-20 If this land becomes a creature but you haven't controlled it continuously since your most recent turn began, you won't be able to activate its mana ability or attack with it that turn.