Erin & Felix (Frozen Aisle)

When Erin & Felix (Frozen Aisle) enters the battlefield, choose one :
Erin - All spells with {b} cost {b} less to cast if you
share an entertaining memory for the group.
Gain 1 life for every player that laughs.
Felix - All spells with{w} cost{w} less to cast if you
make music or sing for 5 seconds. Gain 1 life for
every player that jams with you.