The Rani

Whenever The Rani enters or attacks, create a red Aura enchantment token named Mark of the Rani attached to another target creature. That token has enchant creature and "Enchanted creature gets +2/+2 and is goaded."
Whenever a goaded creature deals combat damage to one of your opponents, investigate.

Sol Ring

Soul Ransom

Enchant creature
You control enchanted creature.
Discard two cards: This Aura's controller sacrifices it, then draws two cards. Only your opponents may activate this ability.

Disrupt Decorum

Goad all creatures you don't control. (Until your next turn, those creatures attack each combat if able and attack a player other than you if able.)