Kilgrimir, Dragon of the North

When Kilgrimir, Dragon of the North enters the battlefield, sacrifice him unless you pay {5}{u}{r} or sacrifice seven lands.
As long as you control fewer than 7 Dragons,
Kilgrimir, Dragon of the North isn't a creature.
Flying, Indestructible
Dragonspells you cast can't be countered.
Dragons you control get +2/+2.
{t}: add {u}{r} to your mana pool.
The land, that once captured his Soul, now forms his
new Body!