app to scan mtg cards Card Scanner Dragon Shield's MTG Scanner app

Casting Cost: Card Text: Undergrowth - Search your library for a black card with converted mana cost less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle your library

A real value at four mana for a 4/4 flyer that costs every opponent a card, it might be fine if you never get to transform it

Third on the list is Waste Not

I particularly love Kogla, the Titan Ape here, since Koglas indestructible ability can be used in conjunction with Samut to save your commander from removal

You've flicked out your Sol Ring on turn one, cast your Trinispheres off Mishra's Workshop, and maybe even looked your playgroup dead in the eye as you combo'd off with Thassa's Oracle