Until end of turn, creatures you control have base power and toughness X/X, where X is the number of cards you own in exile and in your graveyard that are instant cards, are sorcery cards, and/or have an Adventure.
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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
Candlekeep Inspiration