Garruks +1 allows you to give a creature +3/+3 and trample until end of turn
Legendary Creature - Beast Removal (CTRL to add secondary) Stax Magnetic Mountain Blue creatures don't untap during their controllers' untap steps
Getting back fetch lands is always nice, but there are plenty of other lands that send themselves to the graveyard for value, like Strip Mine, Wasteland, and the aforementioned channel lands
The +1/+1 counter is a nice upside, but it isnt a necessary one to make me want to put Combat Tutorial in my deck
Both Entreat the Angels and Jace, the Mind Sculptor do not provide enough value for the high price tag of theirs to warrant as much space in the deck after game 1
Sure, if you could play it in Commander, you might, because it would have a weird effect on the game, but since its Alchemy, despite having no reason to be, you cant without proxying it