In many modern releases: Korean booster boxes commonly have 30 packs , and many modern Korean main sets use 5 cards per pack (so 150 cards per box before any inserts or promo differences)
Mermail Abyssteus can be special summoned by discarding a Water attribute monster to the GY, and because it is level 7, it is incredibly useful to use as XYZ material
Even with only four creatures in the graveyard, its still a 10/10 Hill Giant to go with our 4/4 Grizzly Bears. A basic U/G/b shell for Block Constructed easily could adapt Ghoultree along with the new blue instant Thought Scour and a misers Wild Hunger to compensate for the lack of trample: Creatures (23) 3 Boneyard Wurm 4 Avacyn's Pilgrim 3 Deranged Assistant 2 Kessig Cagebreakers 3 Splinterfright 4 Armored Skaab 4 Ghoultree Lands (21) Spells (16) 3 Mulch 1 Spider Spawning 2 Sever the Bloodline 4 Dream Twist 2 Gnaw to the Bone 3 Thought Scour 1 Wild Hunger Sideboard 9) Lingering Souls This card would be much higher on the list if it had a flashback cost with either blue, green, or white mana rather than black
The list of the Atog Deck, made of Blue, Black and Red cards included, Flametongue Kavu (Planeshift), Psychatog (Odyssey), Shadowmage Infiltrator (Odyssey) among others
At 1U, we are talking about an effect more efficient than Silumgars Scorn in a Dragon deck
A very pretty thing, indeed