mtg strefan commander deck Strefan, Maurer Progenitor | Innistrad: Crimson Vow Decks | Commander It gains indestructible until end of turn. Strefan, Maurer Progenitor (Extended Art)

Kros gives you two abilities

The new Final Fantasy set and Final Fantasy Commander product gave us plenty of inventory to manage

In order to make Hydras the best they can possibly be, you're going to need a lot of mana, and that's what Somberwald Sage and Rosheen are here to supply

Anytime a Food you control is sacrificed, you get to make a 1/1 Squirrel creature token, making her a natural creature to helm a deck based around the creature type

Merfolk Sovereign, Merfolk Mistbinder, Merrow Reejerey, and even the Merfolk God Svyelun of Sea and Sky to keep them all safe

His ability isn't exactly unheard of as far as attacking creatures go but as far as I know the blocking portion he brings to the table is pretty unique