Leo, Celestial Savagery

Partner with Sagittarius, Celestial Hunter (When this creature enters the battlefield, target player puts Sagittarius from the library into their hand, then shuffles.)
Vigilance
At the beginning of each combat, if you control a creature with vigilance, all creatures your opponents control lose vigilance until the end of turn. Same goes for deathtouch, double strike, first strike, flying, haste, hexproof, intimidate, lifelink, trample, reach, and skulk