Brood Keeper
Creature — Human Shaman
Whenever an Aura becomes attached to this creature, create a 2/2 red Dragon creature token with flying. It has ": This creature gets +1/+0 until end of turn."
"Come, little one. Unfurl your wings, fill your lungs, and release your first fiery breath."
Scott Murphy
Magic 2015 (M15)
• #132Rulings
Brood Keeper’s ability triggers both whenever an Aura enters the battlefield attached to Brood Keeper and whenever an Aura on the battlefield attached to a different object becomes attached to Brood Keeper.
(wotc • 2014-07-18)
If an Aura becomes attached to Brood Keeper that causes another player to gain control of it, that player will control the triggered ability that creates a Dragon.
(wotc • 2014-07-18)
Rulings
Brood Keeper’s ability triggers both whenever an Aura enters the battlefield attached to Brood Keeper and whenever an Aura on the battlefield attached to a different object becomes attached to Brood Keeper.
(wotc • 2014-07-18)
If an Aura becomes attached to Brood Keeper that causes another player to gain control of it, that player will control the triggered ability that creates a Dragon.
(wotc • 2014-07-18)