Like most Pokmon cards, the value of Mewtwo depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Majestic Dawn)
Bugenhagen, Wise Elder), and at least 2 more that care about power (Lifestream's Blessing)
R Rare Marincess Wonder Heart X WATER Link 4 [ CyberseLinkEffect ] ATK 2400 DEF - 2+ WATER monsters Once per battle, during damage calculation, if this card battles a monster (Quick Effect): You can Special Summon 1 of your "Marincess" Monster Cards equipped to this card, also this card cannot be destroyed by that battle, and you take no battle damage from that battle
Each placed card reduces the play cost.[On Play] De-Digivolve 1 1 of your opponent's Digimon, then, if DigiXrosing with 2 cards, delete 1 of your opponent's Digimon with a play cost of 5 or less.[All Turns] When this Digimon would be deleted, by returning 1 black level 4 or lower Digimon card from this Digimon's digivolution cards to its owner's hand, you may play 1 [SkullKnightmon] or [DeadlyAxemon] from this Digimon's digivolution cards without paying its memory cost
Protecting your assets is vital in a hobby where card value can be significant
On the fake card, the border is much lighter
