Heavenly prince

When Heavenly prince enters the battlefield,
create a legendary white 2/2 human, knight creature token named Heavens prince with flying, lifelink, indestructible and "When this creature attacks gain 3 life and draw a card".
At the beginning of each players end step, if
Heavens prince dealt combat damage to a player, the attacked player gains control of Heavens prince. Whenever a player gains control of Heavens prince,