Reality Shift [Commander 2017] Cat Advisor it gets +3/+0 until end

it gets +3/+0 until end of turn

Counters remain on Skullbriar as it moves to any zone other than a player's hand or library

and they have a host of ways to deter them

Sacrifice Death's Oasis: You gain life equal to the highest mana value among creatures you control

sacrifice another creature

Reality Shift [Commander 2017] Cat Advisor it gets +3/+0 until endSet: Commander 2017 Type: Instant Rarity: Uncommon Cost: {1}{U} Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2 2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)