Sweethearts

When Sweethearts enters the battlefield, if it isn't a token, create a token copy of it.
Sweethearts can't attack or block alone as long as you control another creature named Sweethearts.
As long as you control exactly one creature named Sweethearts, Sweethearts gets +2/+0, gains first strike, and becomes red in addition to its other colors.
When Sweethearts dies, you gain 3 life.