Because Davriel's ability does not specify that it only reduces colored mana costs (like most other ability that reduce colored mana costs), it can also be used to reduce generic costs as well. Eluge is similar, though it goes out of the way to spell it out in reminder text in a way that Davriel does not.
Anonyman41#22078
Because Davriel's ability does not specify that it only reduces colored mana costs (like most other ability that reduce colored mana costs), it can also be used to reduce generic costs as well. Eluge is similar, though it goes out of the way to spell it out in reminder text in a way that Davriel does not.