mtg commander protection cards MagicalHacker They are my Space Marines.” —The Emperor of Mankind The 49 Best Protection Spells

Hylda of the Icy Crown Hylda of the Icy Crown is a snow commander more in the flavor sense than in the mechanically sense (if we're going by mechanics, Hylda is Magic's best stun counter commander)

Then you can lean into making Jolene a threat that can kill players with commander damage, or just play big, splashy finishers to bludgeon your opponents into submission

Blue and green can potentially untap him several times in a single turn, and all three colors offer enough proliferate and counter-doubling to potentially ultimate a planeswalker when you first summon it (and thats without a Doubling Season)

This can easily push Vincent, or any of your creatures, into the realm of huge threats