As long as its the first card you draw on any given turn, then you can play any instant or sorcery for only two mana, regardless of its actual cost or color
Each time an opponent discards a card, you get to make an elf token, and you can also make a player discard a random card each turn just by having Nath in play
Its not exactly a wheel, but its close enoughand you can sometimes time it so only you really benefit
The nickname Bob comes from who is represented on the card
That constant stream of tokens adds both defense and offense, especially when paired with incremental mill effects like Altar of the Brood
Ephemerate is one of those cards, which can be either non-existing or almost dominate the format , so I currently see it in between being really good in 4c Elementals/Omnath and Esper Reanimator