The bread and butter of a Ratadrabik deck is having good sacrifice outlets, and thankfully there are some Legends who can hook you up
The best stats for cost, the biggest meta share, the most iconic deck, the most demanded reprint, the highest price: Tarmogoyf was all five
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
Absolutely not
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
There's also alternatives like flinging it with the trigger on the stack, or sacrificing it before its sacrifice trigger goes off for an effect