The Important Basics About TCG Sleeves Protection - The number one reason we use sleeves on our cards is to protect them from various things that could cause them harm, like: Liquids Sun light Dents and creases Easier shuffling - Having your Magic deck sleeved up makes it easier to shuffle the cards without having to bend them, as the sleeves allow the cards to slide in between each other
(Equipment, Auras you control, and counters are modifications.) Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.) Once Obstinate Gargoyle has been blocked, causing it to gain flying by modifying it won't cause it to stop being blocked
Unlike other sources of ramp, like creatures or artifacts that tap for mana, lands are very difficult to remove from the battlefield, and unlike temporary ramp, like Dark Ritual, extra lands continue to provide an advantage turn after turn
You also have Skullcap Snail and Unscrupulous Agent to exile cards
If you draw the creature, it might not be too hard to discard it anyway