If you do, you gain 5 life
"When they no longer trust their senses, that's the time to strike." So the 7-attack statline and the First Strike keyword represents the archmage summoning the wall attacking the opponents that are confused
Getting three counters each time you gain life is huge, and can easily spiral out of control with a lot of Lifelinkers
Your deck deserves a little personality
Getting 2/2s simply for playing Magic is a strong ability on its own, and opens up options for mana ramp, Voltron (making 1 creature super strong through powerups), Curses like Curse of Opulence for table politicking, and several other cool, unique effects that Auras can bring to the table as you build a token army
I've had more than one hundred (100) cards come back from CGC and I haven't gotten a single 10.0