Between cards that care about modified creatures, cards like Jiang Yanggu, Wildcrafter that grant abilities to creatures with +1/+1 counters and proliferate, there are few more efficient ways to support each of these with one card
Many commanders tell people what you are playingAzami, Lady of Scrolls says one thing, and Rhys the Redeemed says another
This is probably influenced, at least in part, by the sites longevity in the community (from what I can tell, its been around since c2005)
There's a big advantage to sneaking it onto the battlefield, despite the cost, because when it deals combat damage to an opponent, you can pull a creature from that player's graveyard, which then enters the battlefield under your control, tapped and attacking that player
The Trickery resolves, and you cast the first mega-powerful bomb in your deck for free on turn two, such as a 15/15 Emrakul, the Aeons Torn, which gifts you an extra turn to boot thanks to that cards ability