Horizon Canopy

, Pay 1 life: Add or .
, , Sacrifice Horizon Canopy: Draw a card.

Hexgold Sledge

For Mirrodin!
When Hexgold Sledge enters the battlefield, conjure a card named Goblin Gaveleer onto the battlefield.
Equipped creature gets +1/+0.
Equip

Necron Overlord

Relentless March — , , Tap X untapped artifacts you control: Target opponent loses X life.