Altair, Brotherhood Mentor - Kelsien, the Plague (Rainbow Foil) (SLD-1558) - Secret Lair Drop Series Foil Number_MFC-106 ) You can detach 1

) You can detach 1 Xyz Material from this card

the ATK and DEF of this card become the ATK and DEF of the attacking monster

Card Text1 "Elemental HERO" monster + 1 EARTH monster

This set modernizes popular themes from the Yu-Gi-Oh

FormStage 1 - Evolves from Beldum

Altair, Brotherhood Mentor - Kelsien, the Plague (Rainbow Foil) (SLD-1558) - Secret Lair Drop Series Foil Number_MFC-106 ) You can detach 1Card TypeLegendary Creature Human Assassin RarityMythic Legalities Vigilance, haste Altar, Brotherhood Mentor gets +1 +1 for each experience counter you have. T: Altar deals 1 damage to target creature you dont control. When that creature dies this turn, you get an experience counter.