Mystic Sanctuary
Land — Island
({T}: Add {U}.) This land enters tapped unless you control three or more other Islands. When this land enters untapped, you may put target instant or sorcery card from your graveyard on top of your library.
Colour identity Blue
In short
Mystic Sanctuary has 6 listed printings; the most valuable is the Secret Lair printing from SLD at US$19.34 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
Every Mystic Sanctuary printing
Secret Lair
Mystic Sanctuary
SLD · 2143
TCGplayer market
US$19.34
Mystic Sanctuary
TSR · 408
TCGplayer market
US$8.47
Mystic Sanctuary
MKC · 277
Price not tracked
Mystic Sanctuary
ELD · 247
TCGplayer market
US$1.86
Mystic Sanctuary
SOC · 388
Price not tracked
White Border
Mystic Sanctuary
MB2 · 110
TCGplayer market
US$1.14