In the current meta Lucky Dime is a big one, then McDuck Manor Scrooges Mansion and The Queens Castle Mirror Chamber are about
Who wouldn't notice this goofy Pokemon smiling as it appears to dance
Trigger [Trigger] Activate this card's [On K type card with a cost of 6 or less from your trash to the top of your Life cards face-up
In other words, what Kiora would bring to the table under a hybrid color identity rule change wouldn't be anything you can't do with two different cards right now, but rather just a good option that can do both at once, in either green or blue decks
A free mana, a free Creature, and especially a free card is a lot of value to give to an opponent in a format where card quality is lower and resources far more limited
Equipment precons are nothing new, but what makes Limit Break special is its encouragement to spread your Equipment to multiple creatures, instead of keeping them all on one