However, there is a price for all that power
Specifically, when casting from your grave yard with flashback or whatnot, or copying spells, as with Twincast or Riku of Two Reflections
As far as additional reasons to play a bunch of lessons, we also have Gran-Gran and Combustion Technique
A lot of the on-theme finishers (Meloku, Multani, Avenger of Zendikar, Rampaging Baloths, Primeval Titan) are at a high power level, which is great for convincing the power-max crowd to try it but awkward if you're trying to tone things down
It's a three-drop 3/3 to swing and block, and then you can sacrifice it for two and a tap to Wheel of Fortune, an ability so powerful and iconic that an entire Top Ten Commander archetype is named after it