Tap and untap are fundamental parts of Magic, so much so that theyve explicitly been trademarked
Wayfaring Temple, like Scion of the Wild before it, was much less predictable to play, as an empty battlefield state would render it irrelevant
(Fun fact: until Gigaplant came out in 2007, Fairy King Truesdale had the highest stats of any Plant in the game.) Command Knight probably came out as one of the best, going from "+300 to all Warriors but only when flipped up" to "+400 to all your Warriors all the time, also she's been lowered to Level 4 so you can summon her more easily, and she can't be attacked while you control other Warriors." Not only was she translated, but they even carried over her status as
* Select 1 banished "Moe" monster and 1 "Moe" monster in your graveyard: Shuffle them into your deck
This is fairly generous for some sets, as SIRs and HRs are often much rarer
Like most One Piece TCG cards, the value of Power Mochi 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 (Starter Deck 7: Big Mom Pirates)