Lathril, Blade of the Elves

Menace
(This creature can't be blocked except by two or more creatures.)

Whenever Lathril deals combat damage to a player, create that many 1/1 green Elf Warrior creature tokens.

{t}, Tap ten untapped Elves you control: Each opponent loses 10 life and you gain 10 life.

She is the only one who can bring them all together.