Stir the Pride
Instant
Choose one —
• Creatures you control get +2/+2 until end of turn.
• Until end of turn, creatures you control gain "Whenever this creature deals damage, you gain that much life."
Entwine 
(Choose both if you pay the entwine cost.)
Matt Cavotta
The List (PLST)
• #DST-16Rulings
Notably, the ability granted by the second mode isn’t lifelink. It’s a triggered ability that triggers whenever the creature with that ability deals damage. If that creature also has lifelink, you’ll gain life as a result of that damage and also when the triggered ability resolves. Multiple instances of this ability trigger separately.
(wotc • 2013-06-07)
Only creatures you control when Stir the Pride resolves will get the bonuses.
(wotc • 2013-06-07)
Rulings
Notably, the ability granted by the second mode isn’t lifelink. It’s a triggered ability that triggers whenever the creature with that ability deals damage. If that creature also has lifelink, you’ll gain life as a result of that damage and also when the triggered ability resolves. Multiple instances of this ability trigger separately.
(wotc • 2013-06-07)
Only creatures you control when Stir the Pride resolves will get the bonuses.
(wotc • 2013-06-07)