Ragemonger
Creature — Minotaur Shaman
Minotaur spells you cast cost less to cast. This effect reduces only the amount of colored mana you pay. (For example, if you cast a Minotaur spell with mana cost 
, it costs to cast.)
Karl Kopinski
Born of the Gods (BNG)
• #153Rulings
If you control more than one Ragemonger, the cost reduction is cumulative.
(wotc • 2014-02-01)
If a spell has hybrid mana symbols in its mana cost, you choose which half you will be paying before determining the total cost. If you choose to pay such a cost with {B} or {R}, Ragemonger can reduce that part of the cost.
(wotc • 2014-02-01)
You apply cost reduction effects after other cost modifiers, so Ragemonger can reduce additional costs or alternative costs of Minotaur spells if they include {B} and/or {R}.
(wotc • 2014-02-01)
Rulings
If you control more than one Ragemonger, the cost reduction is cumulative.
(wotc • 2014-02-01)
If a spell has hybrid mana symbols in its mana cost, you choose which half you will be paying before determining the total cost. If you choose to pay such a cost with {B} or {R}, Ragemonger can reduce that part of the cost.
(wotc • 2014-02-01)
You apply cost reduction effects after other cost modifiers, so Ragemonger can reduce additional costs or alternative costs of Minotaur spells if they include {B} and/or {R}.
(wotc • 2014-02-01)