Memories of Joy

Memories of Joy enters the battlefield with X
joy counters on it.
{t}: Up to one target opponent creates a 0/2
Plant creature token named Joyful Tree with
"This creature is every color." and "This creature
cannot attack." Then each opponent who
controls a creature named Joyful Tree gains X
life, where X is the number of joy counters on Memories of Joy. You gain life equal to the total
life gained this way.