The Grombiss

Timeslip {1}{u}{b} (When this permanent enters,
you may pay it's Timeslip cost. If you do, create a
token that's a copy of this permanent, only it has
Vanishing 2.)

Echo {u}{b}

When The Grombiss enters or dies, it deals 1
damage to each other creature and each player.

The plural of 'grombiss' is 'grombiss.'