Echo, the Lost

Myriad
When this creature dies, create a token
called Memories (its a legendary artifact token with {t}, sacrifice Memories: add {w}{u}{b}{r}{g}, use this only to cast human creature spells.)
{b}{g}: Regenerate Echo, the Lost
I am sorry the Conclave didnt have your answers, my friend. Good luck on Tin Street.
—Parting words from Emmara, Selesnya druid.