I like the suggestion, but I’m gonna play the devil’s advocate here:
Say I’m a screen-licking Hearthstone player, who just came back from a game of netdek simulator 2016. I see that mah boi, symmetraismywaifu69, uploaded a sponsored video about a game called “Doolist.” After spamming kappas in the chat to tell him that he is wrong for trying to make a living streaming, I decide to check this “Doolist” game out. Between chugs of Mountain Dew, I bust open some new expansion packs, and build an Abyssian deck, because Lilith is a useless little bunny who’s only good for her sex appeal, and get into a game. Now my opponent plays some big yellow man with taunt, and I just happen to have no Creep and this card in my hand.
“Steal Health from an enemy minion for each friendly Shadow Creep or until it dies”
“Cool,” I think, my pea-size lemur brain kicking itself into high gear, “it says ‘or,’ so I get to choose whether I steal life until it dies or steal life equal to my shadow Doritos. I’ll just steal until it dies instead of actually being smart and considering balance.” I play the card. 0 damage is dealt. Back to hearthstone for me.
Sorry, I am very tired today.
My point is to make the card say:
“Steal Health from an enemy minion for each friendly Shadow Creep or until it dies (Whichever is lower)”