Pardon me for the infectious cards, but I hope you have learned more about the best infect cards in Magic: The Gathering
They copy themselves for each spell cast before it, so it's possible to cast enough spells to burn all your opponents with Grapeshot, or mill them all with Brain Freeze if you're able to cast a ton of spells in one turn (made easier with the Hullbreaker Horror combo)
She also has far and away the best experience counter ability of all commanders
Throw in solid stats and Shift potential, and Kida is a powerful Legendary indeed
In Magic: The Gathering, where the collector market considers cards to be investments it's frankly barbaric to play an actual game with, the equivalent is an unofficial format called Sharpie Cube, or Redacted Cube
You see, if you cast a spell that sets up an effect that happens "at end of turn" once you've past the start of the end-of-turn step, you can keep the results of that spell around until the next end-of-turn step
