Like most Magic: The Gathering cards, the value of Change of Heart 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 (Stronghold)
Funny you should say that, totally normal Grovyle that just happens to be friends with a Shining Celebi
This product line-up succeeds at that
Alternatively, in a pinch, you can also target an opponent, putting a land on top of their deck to stall their draw step, removing a dead creature in response to an Animate DeadAnimate Dead, or burying the important card they just retrieved with a Vampiric TutorVampiric Tutor or Lim-Dul's VaultLim-Dul's Vault or the top-deck they set up for Aminatou, the FateshifterAminatou, the Fateshifter
Some are inkable, some are not, and all have an ink cost to put into play
It's also likely that fake cards will continue to improve rapidly because there's a ton of money to be made by the counterfeiters, and with several or even many different operations making fake cards, each individual counterfeiter has an incentive to keep improving their "product" to stay ahead of the competition