Five damage is enough to kill almost anything, instant speed is important, and delve isnt hard to enable (especially when youve got cards like Winding Way)
This doesnt affect the number of +1/+1 counters on Gruun
Damage marked on permanents won't be removed until you actually get to the cleanup step (which will happen after your second end step), and "until end of turn" and "this turn" effects won't end until the cleanup step either
Arahbo, Roar of the World held fast as the face commander, letting you cast a free, Cat-specific Giant Growth once per turn
Theyre also creatures though, which means that Alibou, Ancient Witness is huge
Pros- Unique way to storm off Access to a large amount of artifacts Cons Card quality is lower Loss of usually meaningful storm win-cons Who Likes it This is obviously a great deck for your artifact lovers