As a rule of thumb, consider grading if you believe the card could grade well (e.g., PSA 9 or 10) *and* its likely graded value far exceeds the grading fee
Its really not hard to construct a deck that can do absolutely absurd things with Zevlor, as theres simply a critical mass of all the different elements you need to go off with him
Perhaps there was a time when the decks were all monocolor save for their mana bases, with the Raging Kavu deck taking red, Questing Phelddagrif blue, and Fungal Shambler blacka rule that later went away as new cards were added to the pool
Thats right: its babys first Wattlock, and itll burn you for 1000 life points every turn until you are as toasty as a metal slide in the summer
Im sure you can find the value of this card quite easily when you look at what wants it
Fairy-type Miku concept art from Megumi Mizutani