Slag Fiend [New Phyrexia] SPA Animar Alma de los Elementos / To have seen those

/ To have seen those dead men rise

Enchanted creature can block only creatures with flying

Set: Guilds of Ravnica Type: Instant Rare Cost: {1}{B} Undergrowth — Search your library for a black card with converted mana cost less than or equal to the number of creature cards in your graveyard

then discard one of them

Slag Fiend [New Phyrexia] SPA Animar Alma de los Elementos / To have seen thoseSet: New Phyrexia Type: Creature Construct Rare Cost: {R} Slag Fiend's power and toughness are each equal to the number of artifact cards in all graveyards. "Seal the furnace vents. Admit no others. We'll tend our forges without their tainted ways." Decree of Urabrask