Hell

{t}, Pay 1 life: Add {b/r}{b/r}
{t}, Pay 2 life: create a 1/1 Sinner.
{2},{t}: Create a 2/2 Imp.
{4},{t}: Create a 4/4 Fallen Angel.
Sinners, Imps, Fallen Angels, Demons, Cultists, and Devils you control get +1/+1.