Then exile it.) "Flashback [cost]" means "You may cast this card from your graveyard if the resulting spell is an instant or sorcery spell by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack." You must still follow any timing restrictions and permissions, including those based on the card's type
Having to pay for each discard means that mana costs will eventually start to pile up so you may not be able to play all of your madness cards with Call the Bloodline
These kinds of cycles are important (if highly situational) for flavour and gameplay, but all I can really comment is the art -- I do like the elaborate 'real beetle' art of Black Scarab and the much fancier Blue Scarab
With a 2/4 statline, Genie isnt particularly powerful, but youll likely get a few good quests out of it before your opponent decides to use some hard removal on it
It even distributes some counters, though less consistently than your main counter distributors since you need creatures with counters to start
Otherwise, its right at home to ramp your snow commanders and act as a high-powered threat there