The tower of Mordor

Tower of Mordor costs {1} less to cast if you control another tower.
Demons, Orcs, and Trolls you control get +1/+1
{t}: create 1 of the following
-2 2/2 black and red orc creature tokens
-1 3/3 black and red troll creature token
-1 2/2 black and red demon creature token with flying
{1}{b}{r}: you may activate the ability above without tapping tower of Mordor
at the beginning of your upkeep, sacrifice 2 among orcs, trolls, or demons. If you can't, sacrifice this card