Treya, Ruin Protector

Excavate — When Treya, Ruin enters the battlefield, you may sacrifice a ruin. If you do, create 3 1/1 white Survivor creature tokens, then
put a +1/+1 counter onto each creature you control.
{3}{g}: Sacrifice a Ruin you control. Put a
+1/+1 counter onto each creature you control.