Seltha, the Dark Queen

When Seltha, the Dark Queen is summoned, summon 6 1/1 Black Serpent creature tokens with Deathtouch.
If Seltha, the Dark Queen deals damage to a creature, summon 2 1/1 Black Serpent creature tokens with Deathtouch.
If Seltha, the Dark Queen deals damage to a creature, summon 3 1/1 Black Serpent creature tokens with Deathtouch.