Qiara, the Creator

Whenever an Equipment enters the battlefield
you may pay {4}. If you do, create a 5/5 Mech
artifact creature token.
Whenever a Mech enters the battlefield under
your control, you may reveal the top card
of your library. If it's a Mech, deal X damage to
each opponent where X is that card's power.
"I find it so exciting to try new weapons and gadgets.
This one transforms into a spaceship."