Tolarian Academy was also part of a cycle of cards from Uzras Saga
Popular in Commander, Triumph of the Hordes grants all your creatures infect, turning their damage into -1/-1 counters to creatures and poison counters to players, and also gives them trample, ensuring that your opponent hits the game-losing threshold of ten poison counters
Using their sacrifice ability can scale them rather quickly and then you can kill them off too for widespread damage
Aether Inspector has Vigilance and "When Aether Inspector enters the battlefield, you get two energy counters"
Three mana for a 4/5 with reach and a transformation ability feels absurd, then I remember that Polukranos Reborn is three green pips for super devotion to green, but needs white phyrexian mana to transform
This was great in Standard and still sees play in Pioneer and Modern, making it a worthy entry and useful if your meta is dominated by other blue decks