With how many landfall effects are in the deck, Choco can trigger them multiple times in just one attack
Newer sets are usually cheaper, except for some special or especially collectible releases
Both cards may find some homes in the appropriate typal decks (I suspect 99% of Razorclaw Bear demand comes from dedicated Ayula players), but I dont think their market value would hold after even a small-scale reprinting
In the untap step, everything untaps at the same time, so the check happens while Kill Switch is tapped, preventing your artifact creatures from coming online
When your deck is so focused on doing something quickly and efficiently, you get a lot of mileage out of Ponder
Im on the fringes of it (I dont collect/play anything but exactly Oops, but several of my friends are into it), but cards like Wandering Emperor exist, as does the entire Kamigawa set