(Waterveil Foundry isn't a spell.)

When Waterveil Foundry enters the battlefield, you lose 2 life unless you reveal a basic land card from your hand.

Waterveil Foundry is indestructible. (Destroy effects and lethal damage don't destroy it.)

: Add  or to your mana pool.

Sacrifice Waterveil Foundry: Add  or to your mana pool.