Footlight Fiend is the last of the bunch, and while I am aware this card combines with Bladebrand to potentially get a two-for-one, I do not like putting bad cards in my deck to make my good cards better and consider the Fiend to be strictly a sideboard card
Once the card is in play, the -1/-1 counter and one of the +1/+1 counters negate each other according to the "matter/antimatter rule" (my name for it at least)
For-Profit Arm Experience building and digital portfolios that convert skills and real proof of work into opportunities
It also scales well into the late game where the flashback cost is less steep and you have acquired some dead cards
Part of why it's so ubiquitous is that the other colorless sweeper options aren't that great, Ugin, the Spirit DragonUgin, the Spirit Dragon aside
Their limited availability makes them highly collectible