This creature truly does grow your creatures at an exponential rate and anyone who knows a thing or two about exponential growth knows that it can get out of control really fast
Having half the mechanics be kicker would both make it harder to differentiate between the mechanics and would definitely give each mechanic less of its own feel
When you do, return target creature or land card from your graveyard to your hand
You also get a bunch of pretty darn good cards to experiment with, including the incredibly powerful Jeskas Will, which is a great way to ramp up in mana for a turn
To solve this, they decided that one of the four decks would be an odd one out, while still paying homage to what was going on
7 Quakebringer A Giant Pain In The Butt An underrated card from Kaldheim, Quakebringer provides you a shockingly easy way of dishing out damage every turn