Kaer Morhen, Fort of Witchers

Fortify {2} (Attaches to a land)
Fortified land has Indestructible and:
{t}: Target creature gets +1/+1 and double strike
until end of turn.
{1}{t}, Discard a card: target creature gains indestructible until end of turn.
{2}{t}, Pay 2 life: Create a 4/4 Human Mutant creature token named Witcher.
{3}{t}: Draw a card.
{4}{ut}: You gain 3 life and create a Treasure token.