japanese booster box VMAX Climax s8b Sealed Case (20x Boxes) The Paradox Pokémon—Iron Crown Pokemon Japanese Mask of Change

This card is a powerhouse by itself

However, even when Atsushi is slain the card still provides you with amazing benefits

Valakut All Ramp decks are hard to interact with for most decks, but Valakut is an extreme case

Heat Shimmer is great, as not only can you copy a creature for their enter the battlefield ability, but it can also combo with Dualcaster Mage for an alternate win condition

[3] When your opponent activates an effect in response to your Fusion monster's effect activation (Quick Effect): You can banish this card you control, and if you do, negate that opponent's effect, and if you do, banish it

It doesn't require a super great deck, or even a skilled mind, to hop in either