Arub Zett, Welcoming Crawdad

Whenever a player casts a spell from their hand,
if there's no card with the same name as that
spell on gatherer.wizards.com, each player may
draw a card.
{3}{u}{u}: Customize target spell's name. (You may replace all instance of a single word of your choice in
that spell's name with another word of your choice. If
you do, you got 5 seconds to choose a word. Its name
must remain coherent. Otherwise, ignore this effect.)