Angrath's Tower of Doom

Creatures you control get Haste, First Strike, Menace, and +X/+O where X is your devotion to black/red.
{t}{2}{r}{b} : Amass 3. Activate this ability only
if you control an Angrath Planeswalker.
{3}{b/r} :Put a loyalty counter on a Angrath planeswalker you control.