The best stats for cost, the biggest meta share, the most iconic deck, the most demanded reprint, the highest price: Tarmogoyf was all five
We also have plenty of "size matters" payoffs like drawing silly amounts of cards off Return of the Wildspeaker, ramping out all the lands with Traverse the Outlands, devouring entire armies with Monstrous Onslaught, and flooding the board with creatures with Scepter of Celebration
You can build her with a lessons theme if you like, but my Toph doesn't give a toot about school, she's just here to earthbend a land each and every time I cast a spell
Gift lets you get a stronger effect from your cards by giving something to your Opponents which can actually also benefit you in a game of Commander
That said, how much mana do you need when doubling up on Crackle with Power or Breach the Multiverse
It evokes memories of wandering through A Bugs Land at Disney California Adventure