The top card of your library isn't in your hand, so you can't cycle it, discard it, or activate any of its abilities that could be activated from your hand
With the increase in the number of planeswalkers (and how good some of them are), The Elderspell seems like its going to be worth playing
Rule 712.4 tells us all we need to know: While a double-faced card is outside the game or in a zone other than the battlefield or stack, it has only the characteristics of its front face. Its the only face we can evaluate for commander-ness
[53] A planeswalker with no loyalty counters, either through use of its abilities or through damage, is put into the player's graveyard
Zetalpa, Primal Dawn One of the biggest meme cards, Zetalpa, Primal Dawn doesnt deserve the flack