If these cards are to be printed, then that's great, but just put them in the decks and maybe make a couple more per set if needed
As for me, if I see a card that can singlehandedly warp the game, sign me up immediately
In Standard, I think this otter wizard will be viable in a future Izzet turns deck if WoTC hasnt learned and keeps printing those cards
This could create some interesting new gameplay, but would likely make the new Partner Commander absurdly expensive monetarily because of how flexible they are (if they have any sort of rarity attached)
* Hand-size-related: If a card's utility depends on your opponent's number of cards in hand, this may be a good time to play it
Its 1 life per creature, not per letter