Bard Burnham

Undying, persist, hexproof.
{x}: Create an X/X legendary red/green
letter creature token called "Letter *" and
choose a letter to replace the *, where X is equal to the alphanumeric number of the letter, (A=1, B=2, Z= 26, etc).
Letters have "{t}, Sacrifice Letter *:
Gain life equal this creature's power."