Possessing the incredibly powerful eminence ability that can be triggered with Arahbo still within the Command Zone, Arahbo can provide any of your Cats with +3/+3 each turn, allowing for a lot of extra early damage to be dealt by any smaller Cats you might have on board
With something like an evasive Commander with red, you could easily turn your random Treasures from your ramping or mana rocks into a win con in one Commander Damage kill smash
This ability helps cards like Drown , Stormy Seas , Nelly Longarms and Atlantean Fate by guaranteeing them to submerge their targets
Steel types are immune to Poison types, meaning that they receive no damage: Poison - Steel isn't alive, nor is it porous enough for the poison to penetrate it even if it was
Sure, there are dual lands, Power 9, The Tabernacle at Pendrell Vale, Juzm Djinn, et cetera
Getting a buff like this, permanently no less, is very exciting indeed