Memory Crystal
Exodus (EXO)
Artifact
Buyback costs cost
less.Format legality
Constructed
StandardNot legal
PioneerNot legal
ModernNot legal
LegacyLegal
VintageLegal
PauperNot legal
Commander
CommanderLegal
Pauper CommanderNot legal
Duel CommanderLegal
PreDHLegal
OathbreakerLegal
Tiny LeadersLegal
Arena
AlchemyNot legal
HistoricNot legal
TimelessNot legal
BrawlNot legal
Standard BrawlNot legal
Competitive BrawlNot legal
GladiatorNot legal
Other
PremodernLegal
Old SchoolNot legal
Penny DreadfulNot legal
Future StandardNot legal
Used in 79 known combosEDHREC #23,914
Rulings
5 · latest Oct 4, 2004
- WotCOct 4, 2004
Can’t reduce the cost below zero.
- WotCOct 4, 2004
Does not apply to other parts of the cost.
- WotCOct 4, 2004
It applies to all players.
- WotCOct 4, 2004
Only affects generic mana portions of Buyback costs.
- WotCOct 4, 2004
The ability is not optional.