Enchant creature
As long as enchanted creature is blue, it gets +1/+1 and has "Whenever this creature deals damage to an opponent, draw a card."
As long as enchanted creature is black, it gets +1/+1 and has "Whenever this creature deals damage to an opponent, that player discards a card."
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Ancient Tombuncommon$127.87
Rhystic Study45 · common$72.11
Esper Sentinel012/303 · rare$66.56
Anointed Procession002/269 · rare$66.27
Demonic TutorUMA093/254 · rare$65.72
Gemstone Caverns274/301 · rare$64.87
Urborg, Tomb of Yawgmoth254/254 · rare$60.78
Demonic TutorDVD49 · uncommon$60.05
Minamo, School at Water's Edge279 · rare$58.58
Nykthos, Shrine to Nyx223/249 · rare$56.85
Phyrexian Altar232/254 · rare$54.23
Vampiric Tutor112/249 · mythic$54.15
Helm of the Ghastlord