Rhythm of the Wild lets the Gruul decks hard-punish things like Azorius Control, which has seen a resurgence of late
Ardyn, the Usurper is definitely powerful though, and it can easily run away with the game if it sticks
This 3-drop merfolk is very curve-friendly for graveyard decks
put it from the command zone into your hand due to Command Beacon), you choose one of your commanders at the time the effect happens
While you're free to build outside these archetypes, they can be useful for new players who aren't used to Limited
(If he does appear early, you can always add him to your inkwell in an emergency.) Thats thanks to Mauis huge challenging power, with both eight strength and eight willpower - enough to banish most characters in the game and live to fight again - as well as the similarly massive three lore he grants on a quest