If you lose control of Kellogg before its last ability resolves, you won't gain control of the target creature at all
The game sees players attempting to forge three keys (hence the games name!), by collecting a resource called Aember
White has come a long way in Commander, and between its efficient removal spells, deck-defining build-arounds, and increasingly respectable attrition engines, the color now has more than enough tools to win games without relying on luck, or worse, your opponents' pity
The fact that you can play Vivi and immediately play any number of free spells to grow Vivi and deal damage to the opponent makes it a very scary card
Look at this first teaser image of Set 13, releasing in the 3rd quarter of this year, Attack of the Vine
In decks that can give it haste or protect it through a rotation, Magus of the Wheel is a genuine threat