Be sure to also check out our Alchemy overview and FAQ, the State of the Game announcement that dives into more Alchemy details, and the Alchemy Rebalancing Philosophy article
He's a Zoologist, but strangely, he doesn't care about whether those tokens are creatures or not
Mechanics Lets dive into the new and returning mechanics in the set
Otherwise, it's a great emergency removal spell that can hit anything from Academy Ruins to Teferi, Hero of Dominaria to Phyrexian Arena to Mind's Eye to Wurmcoil Engine
Faeburrow Elder not only taps for 1 mana of each color among permanents you control, but it also grows larger with every color represented, so its both a ramp engine and a solid body
Flash gives the cards controller the utility to surprise opponents and deploy a threat when its needed most