Blood Oath [Mercadian Masques] Unstable you can Special Summon as

you can Special Summon as many "Crystal Beast" cards as possible from your Spell & Trap Card Zone

Set: Legendary Collection Kaiba Card type: Tuner/Effect Monster Rarity: Secret Rare Attack: 300 Defense: 250 If this card is sent to the GY: Add 1 "Blue-Eyes White Dragon" from your Deck to your hand

Set: Legendary Collection 5D's Card type: Effect Monster Rarity: Common Attack: 1600 Defense: 1200 This card gains 100 ATK for each "Meklord" monster on the field

Set: Return of the Duelist Card type: Effect Monster Rarity: Ultimate Rare Attack: 1500 Defense: 1300 You can Set this card from your hand to your Spell & Trap Card Zone as a Spell Card

Blood Oath [Mercadian Masques] Unstable you can Special Summon asSet: Mercadian Masques Type: Instant Rarity: Rare Cost: {3}{R} Choose a card type. Target opponent reveals their hand. Blood Oath deals 3 damage to that player for each card of the chosen type revealed this way. (Artifact, creature, enchantment, instant, land, planeswalker, sorcery, and tribal are card types.)