A 3-mana 3/3 that draws cards like it's going out of style is already fantastic, but Wizards decided that wasn't busted enough and gave it a game-winning ability on top of all that
When an MTG Battle card is played, its controller chooses a player to be its protector (there are restrictions on this depending on the Battle type)
In other words, and paraphrasing the old saying, you can please some people sometimes, but can't please all the people all the time
The lions share of direct Equipment support is in white, from tutoring to cheating equip costs to bolstering equipped creatures
That split makes it reliable against both utility creatures and early walkers, and the bonus life on the draw can help stabilize
A copy of an X-spell on the stack is a separate spell with the same X value that you paid for the original