You can mitigate its effectiveness by not trading off Hero tokens versus black decks or relying on something like Hecteyes
The EDH format influences prices on the Magic market like no other, so cards that you wouldn't expect to see in other competitive formats may take all the attention from the rest of the seemingly better cards
Seeing a huge board of tokens crash over your opponents for the win is hugely satisfying
FromTheShire: Hands down one of the best uncommon signpost cards, it's costed fairly, it flies, it poisons, and then it just keeps ever increasing pressure on your opponent
[Deck Title= Simic Henge Baker Neenan] [Creatures] 4 Emry, Lurker of the Loch 4 Ornithopter 4 Gilded Goose 2 Vantress Gargoyle 2 Rhonas the Indomitable [/Creatures] [Spells] 4 The Great Henge 4 Springleaf Drum 2 Once Upon a Time 4 Ensoul Artifact 4 Oko, Thief of Crowns 3 Heart of Kiran [/Spells] [Lands] 6 Island 6 Forest 4 Breeding Pool 4 Botanical Sanctum 3 Darksteel Citadel [/Lands] [Sideboard] 2 Veil of Summer 2 Metallic Rebuke 1 Emrakul, the Promised End 3 Phyrexian Revoker 4 Tireless Tracker 3 Stubborn Denial [/Sideboard] [/Deck] Look, were probably not going to get Emry banned by slotting it into independently broken decks, so lets just try to cast it on turn one and go from there