(For reference, 2021s infamous Moonbreon peaked at $1,300 in a 10, and is now around $740.) The scarcity will be increased by Paldean Fates being a s0-called special set, meaning booster packs wont be sold individually (unless your LCS tears down boxes)
When it dies or is exiled, return it to the battlefield tapped.) Whenever this creature attacks, each opponent loses X life and you gain X life, where X is the number of creatures you control with +1/+1 counters on them
Tips for avoiding overpaying Know MSRP before you buy (see chart below)
There are good ways to deal with it such as countering the adventure part or having graveyard exile, but it snowballs quickly outside of that

Teval EDH | Commander | Abe Sargent Commander (1) 1 Teval, the Balanced Scale Creatures (22) 1 Colossal Grave-Reaver 1 Draining Whelk 1 Eternal Witness 1 Fangkeeper's Familiar 1 Hermit Druid 1 Kishla Skimmer 1 Kheru Goldkeeper 1 Lord of Extinction 1 Lotuslight Dancers 1 Mortivore 1 Muldrotha, the Gravetide 1 Mulldrifter 1 Mystic Snake 1 Ramunap Excavator 1 Sakura-Tribe Elder 1 Satyr Wayfinder 1 Sidisi, Brood Tyrant 1 Six 1 Tasigur, the Golden Fang 1 Timeless Witness 1 Transcendent Dragon 1 Wight of the Reliquary Spells (15) 1 All Suns' Dawn 1 Arcane Denial 1 Bala Ged Recovery 1 Beast Within 1 Fell the Profane 1 Lie in Wait 1 Life from the Loam 1 Living Death 1 Rise of the Dark Realms 1 Rise of the Witch-king 1 Rite of Renewal 1 Splendid Reclamation 1 Welcome the Dead 1 Will of the Sultai 1 Windfall Enchantments (7) 1 Glacierwood Siege 1 Out of the Tombs 1 Oversold Cemetery 1 Ripples of Undeath 1 Teval's Judgment 1 Tortured Existence 1 Walk-In Closet // Forgotten Cellar Artifacts (8) 1 Conduit of Worlds 1 Commander's Sphere 1 Essence Anchor 1 Mind Stone 1 Sol Ring 1 Soldevi Digger 1 Stonespeaker Crystal 1 Vessel of Endless Rest Lands (38) 5 Forest 4 Island 5 Swamp 1 Academy Ruins 1 Bojuka Bog 1 Boseiju, Who Endures 1 Breeding Pool 1 Command Tower 1 Drownyard Temple 1 Evolving Wilds 1 Fabled Passage 1 Fetid Pools 1 Hedge Maze 1 Kishla Village 1 Memorial to Folly 1 Mistrise Village 1 Opulent Palace 1 Otawara, Soaring City 1 Overgrown Tomb 1 Shifting Woodland 1 Takenuma, Abandoned Mire 1 Terramorphic Expanse 1 Undercity Sewers 1 Underground Mortuary 1 Volrath's Stronghold 1 Watery Grave 1 Zagoth Triome There we go

Obviously a card that does this is going to see some serious competitive play, as demonstrated by teams such as Comic Odyssey