Construct's Faith

Artifacts you control cost {1} less to cast.
Artifact Creatures you cast enter the battlefield
with a +1/+1 counter on them.
Whenever you cast an artifact spell, you get 1
brick counter.
{1}, pay 1 brick counter: You gain 1 life
{2}, pay 2 brick counters: You gain 3 life.
{3}, pay 3 brick counters: You gain 5 life.
Before your untap step, sacrifice
Construct's Faith unless you pay {1}.