ancient origins booster box ebay Pokemon Pack The XY Ancient Origins Booster from The Pokémon Company is an essential product for collectors and players of Pokémon cards Pokemon XY Ancient Origins -

Niv is absolutely back-breaking since it can demolish board states and kill all on its own (by just casting cantrip after cantrip with it in play)

Harmonizing Magician is a great candidate for this, as its a pendulum tuner that special summons its own level 4 non-tuner monster when its pendulum summoned

Veidos the Eruption Dragon of Extinction X DARK Level 9 [ PyroEffect ] ATK 2800 DEF 1500 During the Main Phase, if this card is in your hand (Quick Effect): You can target 1 card in a Field Zone

Gramma Tala, Spirit of the Ocean (217/204) Enchanted Rare ($165) The grandmother of the titular character of Disney movie Moana, Gramma Tala is a Sapphire card with a very high 7 Ink cost

So all 10 of my suggestions are going to work on punishing or gaining extra value out of any benefits we give to our opponents