Dungeons & Dragons: Adventures in the Forgotten Realms

Blue Dragon | Creature | Dragon | Flying Lightning Breath — When Blue Dragon enters the battlefield, until your next turn, target creature an opponent controls gets -3/-0, up to one other target creature gets -2/-0, and up to one other target creature gets -1/-0. | Svetlin Velinov

Tiamat | Legendary Creature | Dragon God | Flying When Tiamat enters the battlefield, if you cast it, search your library for up to five Dragon cards not named Tiamat that each have different names, reveal them, put them into your hand, then shuffle. | Chris Rahn