Xathrid Necromancer loves it when your humans mix it up in combat, and frankly many will come back tougher as zombies
Dream seals Baghdad in a bottle, and we see the Caliph wake up in "real world" 8th century Baghdad with no solid recollection of what transpired
Destroy target creature if it has mana value 2 or less
They can build a board and eventually become threatening, but their mana may be awkward, their interaction limited, and their card choices driven as much by flavor as efficiency
My opinion on why Standard has been stale over the last few years is because there have been a small number of cards that have been much better than the rest of the card pool, which means you had to play them
They''re mostly useful for people looking to get into the game that may have missed most of the cards available from setes on through four