Pale Moon was the worst card in Magics history eighteen years ago, and its the worst card in Magics history now
Considering that other upgrades to the Dance of the Elements precon like Flamekin Harbinger have yet to have their prices drop post-spike, Cavalier of Flame will likely follow suit
A Simic planeswalker with a low mana cost, and a +1 ability to turn any artifact or creature into a 3/3 elk with no abilities, Oko can quickly diminish the value of many cards under an opponent's control
Additionally, the card is really only super exciting because of Raggadragga, Goreguts Boss
For example, if I roll 2, 2, and 4 on three six-sided dice, her second ability will trigger twice and her third ability will trigger once
Besides that, we also found out there's no true control deck in the environment post-ban, which is a strong indicator that we shouldn't be playing control