The maths started to get way above my head for just a children's card game, but you should see Necrovalley + Dragoon in over half of your games without Prosperity, and Prosperity should theoretically improve your odds of making both together, with 6 cards and several 2 card combos standing in for Red-Eyes Dark Dragoon, and 9 cards total representing Necrovalley
Just be thankful that these game-changing GX attacks can only be used once per player, per game
take 2 cards from your Deck with different names from each other, that are "Charmer" monsters, "Familiar-Possessed" monsters, and/or "Possessed" Spells/Traps, add 1 of them to your hand, and Set the other
Note that the art on the sheet pictured above only appears brighter due to the lighting differences necessary to shoot the card that is still part of the sheet and not due to any inherent difference in the foil
The triggered ability is quite powerful even if it happens far less often than landfall
That said, he does find his way into my hand more often than I'd like, so I've been toying with the idea of replacing him with a Secutor or even putting a second Dimacari back in
