Santa Claus, Father of Elves

Flying, Shroud.
Other Elf Creatures get +1/+1.
Tap three untapped Elf Creatures you control,
create a Gift Token that has; {t} add {g}{g}{g}
{t} Create a Gift Token that
has; {1} Sacrifice Gift Token, add {g}{g}
{9} Put eight 1/1 Reindeer Tokens with Flying
and one 0/4 Sleigh Artifact Creature unto the battlefield. Sacrifice these at your next upkeep.