Night Wanderer will be coming up next, and theres a rumor about a set called Paradise Dragona kicking around as well.
Two of each may seem low to those familiar with Atarka Red, but with all the card draw you see a larger portion of your deck than before
Even if he doesn't have materials from his main deck, he can still get this out via Link Monster's Troymare, but it's generally not a good idea except for some combos
As a five-drop, the Avatar Horror has decent stats, although no keywords like Balemurk

Discard one "Shadow the Hedgehog," then do one of the following: -Banish one "Chaos Emerald: Red," one "Chaos Emerald: Blue," one "Chaos Emerald: Green," one "Chaos Emerald: Purple," one "Chaos Emerald: Yellow," one "Chaos Emerald: White," and one "Chaos Emerald: Cyan" from your Graveyard, and Fusion Summon one "Super Shadow the Hedgehog." -Banish one "Master Emerald" from the Graveyard, and Fusion Summon one "Super Shadow the Hedgehog." Discard one "Sonic the Hedgehog," then do one of the following: -Banish one "Chaos Emerald: Red," one "Chaos Emerald: Blue," one "Chaos Emerald: Green," one "Chaos Emerald: Purple," one "Chaos Emerald: Yellow," one "Chaos Emerald: White," and one "Chaos Emerald: Cyan" from your Graveyard, and Fusion Summon one "Super Sonic the Hedgehog." -Banish one "Master Emerald" from the Graveyard, and Fusion Summon one "Super Sonic the Hedgehog." When this card is Special Summoned, send one "Chaos Emerald" card from your Deck to your Hand