When they counter your artifact spell, it goes to the graveyard, and Mishra simply puts it into play, completely ignoring the downside while your opponents are stuck paying taxes
Even if this dies, its often a four-for-one, forcing each opponent to discard a card on top of somebody using removal on it
Killer Cosplay A bear in sheeps clothing Killer Cosplay is a one-mana Green equipment card that reads: Whenever Killer Cosplay becomes attached to a creature, choose a creature card name with an identical mana cost
Yes, the white cards that draw you cards when your opponent casts spells cover the full range of only use in special cases to format staple. The best such card is Esper Sentinel, which requires opponents to pay mana to cast noncreature spells or you'll draw you a card
Satyr Nyx-Smith This satyr is an Elemental token generator, although its ability is more expensive and harder to pull off than Rakka Mar