Plus, its a card with an auto-target on it, as the player is often attacked in order to either end the Eye shenanigans or force him to drop his hand and spend mana on defense rather than on cards
Tribal Flames is also still a core part of the Zoo experience, serving as both a way to end the game from some truly ridiculous life totals or do a great Terminate impression
Adding black to a mono-blue deck isn't something crazy and new
Of course, theyre both very good with blink cards a la Ephemerate, which has been a combo showing up in Modern so far
Just being instant pretty much removes all diminishing returns from a discard card and so clique is a real winner with its ever so useful body
Note that the Giant has the activated ability, not the equipment, so, it may be activated only by the creatures controller