mtg chord of callingravnica city of guilds Eldrazi It was finding the invisible

It was finding the invisible door that caused him problems

if you've been dealt 5 or more damage this turn

You may cast a spell with mana value X or less from among cards revealed this way without paying its mana cost

destroy that creature at end of combat

mtg chord of callingravnica city of guilds Eldrazi It was finding the invisibleSet: Ravnica: City of Guilds Type: Instant Rarity: Rare Cost: {X}{G}{G}{G} Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.