Artificer's Intuition has great utility in decks that trade artifacts in play with artifacts in the bin: it lets you dump a Blightsteel Colossus or Portal to Phyrexia into your graveyard, while tutoring up a cheap artefact to play out
His abilities let him draw and then discard a card, phase out a creature you dont control, and take two extra turns
While its 2/2 body isnt impressive, Grenzos combat damage trigger counts each creature you control, meaning you can sneak by with evasive flying or menace creatures and still get to impulse draw off of your opponents library
Infernal Spawn of Infernal Spawn of Evil 8BB Creature Beast Child 8/8 Flying, first strike, trample Once each turn, while you're searching your library, you may pay 1B, reveal Infernal Spawn of Infernal Spawn of Evil from your library and say "I'm coming, too!" If you do, Infernal Spawn of Infernal Spawn of Evil deals 2 damage to a player of your choice
What makes them so insidious is sellers often make big promises about the rarity of the cards theyre selling in the repacks but dont always follow through
