Dross Golem

Affinity is a static ability that functions while the spell with affinity is on the stack. “Affinity for [text]” means “This spell costs you {1} less to cast for each [text] you control.”

If a spell has multiple instances of affinity, each of them applies.

Fear is an evasion ability.

A creature with fear can’t be blocked except by artifact creatures and/or black creatures. (See rule 509, “Declare Blockers Step.”)

Multiple instances of fear on the same creature are redundant.