Dungeons & Dragons: Adventures in the Forgotten Realms

Dragon Turtle | Creature | Dragon Turtle | Flash Drag Below — When Dragon Turtle enters the battlefield, tap it and up to one target creature an opponent controls. They don't untap during their controllers' next untap steps. | Dan Scott

Yuan-Ti Malison | Creature | Snake Rogue | Yuan-Ti Malison can't be blocked as long as it's attacking alone. Whenever Yuan-Ti Malison deals combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.) | Oriana Menendez

Mind Flayer | Creature | Horror | Dominate Monster — When Mind Flayer enters the battlefield, gain control of target creature for as long as you control Mind Flayer. | Daarken

Grazilaxx, Illithid Scholar | Legendary Creature | Horror | Whenever a creature you control becomes blocked, you may return it to its owner's hand. Whenever one or more creatures you control deal combat damage to a player, draw a card. | Alexander Mokhov

Volo, Guide to Monsters | Legendary Creature | Human Wizard | Whenever you cast a creature spell that doesn't share a creature type with a creature you control or a creature card in your graveyard, copy that spell. (A copy of a creature spell becomes a token.) | Zoltan Boros