unexpectedly from your deck would go farther than him sitting in the command zone with your opponents eyeballing him
There are so many decks in Standard right now that immediately fold to a turn-three Kaito, I dont know what else to tell you
Endless Punishment a red/black group slug deck that wants every opponent to take small, incremental damage to beef up its commander, Valgavoth, Harrower of Souls
Opposition Agent lets you control your opponent when they tutor stuff up, and any time they tutor the cards they grab get exiled and you get access to them
What this means is that you can make use of the 5/5 on a turn in which you use up to all bar one of your mana to do other relevant stuff
But if your opponent doesnt have sweepers, flooding the board with tokens from [card]Nested Shambler[/card], [card]Infestation Sage[/card], or [card]Rotten Reunion[/card] can win through sheer numbers