Algernon, Fortuitous Mage

+1: Create a 2/2 blue owl token with flying, mountainwalk and islandwalk
-X: You deal X damage to all creatures your opponents control, or 2 times X if those creatures have flying.
-7: Create an emblem with "whenever a nontoken creature you control dies place a loyalty counter on Algernon, and make a copy of that creature".