Warlock

Poison Cloud {2}: Deal 2 damage to target enemy creature. If that creature survives, it gets -1 attack until the end of your opponent's next turn
Summon Spider {3}: Once per turn, you may summon a Giant Spider creature token onto the battlefield.
Summon Daemon {8}: Once per game, if you control a Town Hall and a Temple, summon a Daemon creature token onto the battlefield.