Every time a player considers acting against the Group Slug deck, they will weigh the risk/reward of removing whatever is granting them treats, frequently they will find making the choice too taxing and just focus elsewhere
Talk about a Game Changer
So many of the cards in the deck put +1/+1 counters on your creatures for minimal effort, and with certain other cards, those counters can stick around even if the creatures with them get removed
They can be tutored with Open the Armory in an emergency, and enchant enemy creatures to take them out of combat
Gaining a level is a normal activated ability
Superior Card Protection with Matte Dual Art MTG Card Sleeves for Modern Gamers While the design captures the spirit of 19th-century Japanese art, the construction of the Great Wave MTG sleeves is distinctly modern, offering superior protection for your prized cards