Kyun, Cosmic Explorer

Flying
Cosmic (At the beginning of your endstep. As long as
you control ten or more lands, you may have this
creature become an enchantment with indestructible
and shroud until your next turn. It is not a creature)
Constellation — Whenever an enchantment enters
the battlefield under your control. Draw a card,
and gain 3 life. You may play an additional land
this turn.