mtg cards like stifle | Proxy Card #_(Mana abilities cant be targeted.) _# Stifle

For example a mere 2/2 Zombie Army is going to give you a Languish-type effect for a Languish-level cost

While we have only seen 4 iconic cards, their rarity likely means they will remain the most valuable cards in any set they are printed in

9 Rosheen Meanderer Rosheen Gon' Give It To Ya A commander with a built-in restriction to your deck building, Rosheen Meanderer has just one ability, though it is a very strong mana one

Similar to Birthing Pod from the past, you can use it to enable a combo, but it can also just act as a card advantage engine and/or influence the board state via the -1/-1 counters

While you do have to put up some serious cash to get these drops, its a no-brainer