Aashvi Stoneforger

Metalcraft - Aashvi has vigilance and lifelink as long
as you control three or more artifacts.

Landfall - Whenever a land enters the battlefield
under your control, create an artifact token named
Ore.

{t}, Sacrifice X Ore tokens: Search your library for
an Equipment card with mana value X or less, put it
onto the battlefield, attach it to a creature you control,
then shuffle.