Boros Keyrune [Guilds of Ravnica Guild Kit] Beast Horror Once per turn: You can

Once per turn: You can Fusion Summon 1 "Melodious" Fusion Monster from your Extra Deck

you may pay {4}

Set: Spirit Warriors Card type: Continuous Trap Rarity: Super Rare "The Weather" Effect Monsters in your Main Monster Zones of this card's column and its adjacent columns gain this effect

Set: Battle Pack: Epic Dawn Card type: Effect Monster Rarity: Rare Attack: 2500 Defense: 1600 You can discard Machine monster(s) whose total Levels equal 8 or more

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Boros Keyrune [Guilds of Ravnica Guild Kit] Beast Horror Once per turn: You canSet: Guilds of Ravnica Guild Kit Type: Artifact Rarity: Uncommon Cost: {3} {T}: Add {R} or {W}. {R}{W}: Boros Keyrune becomes a 1 1 red and white Soldier artifact creature with double strike until end of turn. (It deals both first strike and regular combat damage.)