Pot of Avarice [EEN-EN037] Ultimate Rare Deck during damage calculation you can

during damage calculation you can send 1 card (only) from your hand to the Graveyard to have this card gain 600 ATK during damage calculation only

Set: Legendary Duelists: Sisters of the Rose Card type: Ritual/Effect Monster Rarity: Super Rare Attack: 2500 Defense: 2600 You can Ritual Summon this card with "Machine Angel Ritual"

/if this card is attacked

You can only use this effect of "Ancient Gear Wyvern" once per turn

If this card is Normal or Special Summoned from the hand: You can add "Mekk-Knight" monsters with different names

Pot of Avarice [EEN-EN037] Ultimate Rare Deck during damage calculation you canSet: Elemental Energy Card type: Normal Spell Rarity: Ultimate Rare Select 5 Monster Cards from your Graveyard, then add them to your Deck and shuffle it. After that, draw 2 cards from your Deck.