Like most Pokmon cards, the value of Greninja 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 (SWSH Black Star Promos)
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For draw spells, if Sea Gate Restoration is stretching the budget, Overflowing Insight gives you nearly as much gas for a much smaller price tag
In a deck focused more on items but still wanting ramp Fishbone Quill is the go to
You choose targets.) A Gain control of target creature you don't control
To replicate this 'immersive' feel in the physical world, creators use Holographic Hot-Stamping and Foil Shards , which change appearance as you tilt the card