Everything that is specified by the effect creating the original token or tokens will also be true about the additional token or tokens created by Elspeth's replacement effect
It completely shuts down graveyard strategies by exiling cards instead, and you can sacrifice Voidwalker to play an exiled card without paying its mana cost
Gallery and List of Transmute Cards Brainspoil Clutch of the Undercity Dimir House Guard Dimir Infiltrator Dimir Machinations Dizzy Spell Drift of Phantasms Ethereal Usher Grozoth Muddle the Mixture Netherborn Phalanx Perplex Shred Memory Tolaria West Best Transmute Cards These cards are really only as valuable as the cards they can fetch since none of them are really all that playable for their face cost
We had legendary critters and archetypes already running around for those
Blackbeard plays a lot like a control deck
Mythic rares drop a bit more frequently this time around, but aside from that, you're getting what you're used to: 10 commons, 3 uncommons, 1 rare or mythic rare, 1 full-art basic land, and 1 token/ad card