All Slivers have "{0}: If this permanent is on the battlefield, flip a coin. If you win the flip, exile this permanent and return it to the battlefield under its owner's control at the beginning of the next end step. If you lose the flip, sacrifice it."
Flash Flying When this creature enters, return a creature you control to its owner's hand. When this creature enters, exile target card from a graveyard.
As the muscle cords of the creature twitched, Hanna saw an unsettling unanimity in the others' rippling flesh. She didn't know what it meant, but she urged Sisay to keep the ship at a safe distance.
Target opponent chooses a card in your graveyard. You may pay {B}. If you do, repeat this process except that opponent can't choose a card already chosen for Shrouded Lore. Then put the last chosen card into your hand.
Flying When this creature enters, return a blue or black creature you control to its owner's hand. Whenever this creature deals combat damage to a player, look at that player's hand and choose a card from it. The player discards that card.
{G}: This creature gets +1/+1 until end of turn. Target opponent creates a 1/1 green Hippo creature token. {W}: This creature gains protection from black and from red until end of turn. Target opponent gains 2 life. {U}: This creature gains flying until end of turn. Target opponent may draw a card.