It also has the added benefit of modifying your creatures in deck, graveyard and exile so you can use specific tutor and abilities to find cards you normally couldnt, like with Mogg Catcher
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Animar can helm a hydra deck that's friendly towards Shivan Devastator and Savageborn Hydra, to name a few, and the addition of blue lets you access counterspells and better disruption
Storing a bunch of lands under it, then casting Obliterate, wiping the entire board and getting everything back that was exiled
Melek, Reforged Researcher I think the last part of this card to be balanced in design was the mana value because getting this much cost reduction on your first spell each turn is ridiculous, and if you could cast Melek, Reforged Researcher any earlier, it'd be broken