Spiked Fence

As long as fortified land is untapped, you and all planeswalkers you control have absorb 1.
As long as fortified land is tapped, creatures you control get +0/+1.
When a creature you don't control that doesn't have flying attacks, if Spiked Fence is attached to a land, Spiked Fence does 1 damage to that creature.
{2}: Untap fortified land.
Sacrifice Spiked Fence: Regenerate fortified land.
Fortify {2} ({2}: Attach to target land you control. Fortify only as a sorcery.)