Its good with mechanic counters like flying counters, trample counters, or shield counters, so you can spread them around or even grow the Aven itself
Very powerful but not very fun to win with or lose to and not exactly a skillful card
Card 13 will be a rare or a mythic rare
They can have a significant impact on the game
You would think that the possibility of getting a Tolarian Academy in Standard would be motivation, but alas it has not been so
Before we get into the meat of this piece, feast your eyes on this glorious list of mythic rares: Liliana of the Veil $100 Karn Liberated $100 Cavern of Souls $90 Snapcaster Mage $80 Tarmogoyf $80 Karakas $75 Temporal Manipulation $70 Bitterblossom $50 Dark Depths -$45 Vengevine $45 Kozilek, Butcher of Truth $45 Emrakul, the Aeons Torn $40 Ulamog, the Infinite Gyre $35 Mikaeus, the Unhallowed $30 Mana Vault $30 Leovold, Emissary of Trest $25 Lord of Extinction $16 Sigarda, Host of Herons $16 Platinum Emperion $15 Balefire Dragon $10 Even the most ardent Ultimate Masters haters must be excited about these twenty cards