Changing a creatures controller immediately removes it from combat, so Charisma becomes a form of super-deathtouch which should seriously discourage swinging into your aura-bearer
(Bevy of Beebles) Jace Beleren Jace Reawakened Jace, Arcane Strategist Jace, Architect of Thought Jace, Cunning Castaway Jace, Ingenious Mind-Mage Jace, Memory Adept Jace, Mirror Mage Jace, Telepath Unbound Jace, Unraveler of Secrets Jace, Wielder of Mysteries Jace, the Living Guildpact Jace, the Mind Sculptor Jace, the Perfected Mind Kaito, Cunning Infiltrator Kasmina, Enigmatic Mentor Mordenkainen Mu Yanling Mu Yanling, Celestial Wind Mu Yanling, Sky Dancer Narset, Parter of Veils Oko, Lorwyn Liege Tamiyo, the Moon Sage Teferi, Master of Time Teferi, Temporal Archmage Teferi, Temporal Pilgrim Teferi, Timeless Voyager Tezzeret the Seeker Tezzeret, Artifice Master Tezzeret, Betrayer of Flesh Tezzeret, Cruel Machinist Vronos, Masked Inquisitor Will Kenrith Will, Scholar of Frost

Pretty much all of the blue backgrounds are keyed into a more distinguished board presence for your blue Commander, and Im more than happy to run these in the 99 of many a deck that wants to win with creatures, whether voltron or go-wide
Shes got me pretty fired up, I have to say
First and foremost, theyre on the Reserved List, much to the chagrin of many newer players