This might sound obvious, but an easy step you can take to verify the card is real is by checking that the card was an actual Pokmon card that was in print at some point
If that werent enough, you can sacrifice it to counter problematic activated or triggered abilities from your opponents which can help potentially help save you from losing to Thassas Oracle

Tyranid Precon Upgrade View on Archidekt Commander (1) 1 The SwarmlordThe Swarmlord Creatures (34) 1 AberrantAberrant 1 Atalan JackalAtalan Jackal 1 BiophagusBiophagus 1 BroodlordBroodlord 1 ClamavusClamavus 1 Deathleaper, Terror WeaponDeathleaper, Terror Weapon 1 ExocrineExocrine 1 Forgotten AncientForgotten Ancient 1 Gargoyle FlockGargoyle Flock 1 HaruspexHaruspex 1 Hierophant Bio-TitanHierophant Bio-Titan 1 Hormagaunt HordeHormagaunt Horde 1 Incubation DruidIncubation Druid 1 LictorLictor 1 Magus Lucea KaneMagus Lucea Kane 1 MalanthropeMalanthrope 1 MawlocMawloc 1 NexosNexos 1 Old One EyeOld One Eye 1 Purestrain GenestealerPurestrain Genestealer 1 RavenerRavener 1 Screamer-KillerScreamer-Killer 1 Shaman of the Great HuntShaman of the Great Hunt 1 SporocystSporocyst 1 Termagant SwarmTermagant Swarm 1 TervigonTervigon 1 The Red TerrorThe Red Terror 1 ToxicreneToxicrene 1 Trygon PrimeTrygon Prime 1 Tyranid HarridanTyranid Harridan 1 Tyranid PrimeTyranid Prime 1 Tyrant GuardTyrant Guard 1 Winged Hive TyrantWinged Hive Tyrant 1 ZoanthropeZoanthrope Instants (8) 1 AetherizeAetherize 1 Biomass MutationBiomass Mutation 1 Change of PlansChange of Plans 1 HarrowHarrow 1 Inspiring CallInspiring Call 1 Quandrix CommandQuandrix Command 1 SilkguardSilkguard 1 StarstormStarstorm Artifacts (3) 1 Arcane SignetArcane Signet 1 Herald's HornHerald's Horn 1 Sol RingSol Ring Lands (39) 1 Ash BarrensAsh Barrens 1 Cave of TemptationCave of Temptation 1 Cinder GladeCinder Glade 1 Command TowerCommand Tower 1 Evolving WildsEvolving Wilds 1 Exotic OrchardExotic Orchard 8 ForestForest 1 Frontier BivouacFrontier Bivouac 1 Game TrailGame Trail 7 IslandIsland 7 MountainMountain 1 Opal PalaceOpal Palace 1 Path of AncestryPath of Ancestry 1 Rugged HighlandsRugged Highlands 1 Temple of AbandonTemple of Abandon 1 Temple of EpiphanyTemple of Epiphany 1 Temple of MysteryTemple of Mystery 1 Terramorphic ExpanseTerramorphic Expanse 1 Thornwood FallsThornwood Falls 1 Unclaimed TerritoryUnclaimed Territory Enchantments (9) 1 Bred for the HuntBred for the Hunt 1 Death's PresenceDeath's Presence 1 Hardened ScalesHardened Scales 1 Invigorating Hot SpringInvigorating Hot Spring 1 New HorizonsNew Horizons 1 Primal EmpathyPrimal Empathy 1 Shadow in the WarpShadow in the Warp 1 Simic AscendancySimic Ascendancy 1 The First Tyrannic WarThe First Tyrannic War Sorceries (6) 1 CultivateCultivate 1 FarseekFarseek 1 Hull BreachHull Breach 1 Overwhelming EncounterOverwhelming Encounter 1 Rampant GrowthRampant Growth 1 Tyranid InvasionTyranid Invasion Apex of Evolution What if you wanted to push this deck to it's limit

Creature Dragon5/5 Flying Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.) Whenever this creature attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures
End Step: Should You Get Fake Cards as Proxies