Goblin Cruciverbalist

Creature — Goblin Wizard Guest1/4$0.19

Haste When this creature enters, create a colorless artifact token named your choice of A, E, I, O, or U. Whenever this creature attacks, using the first letters of the names of permanents you control, spell a word you haven't spelled this game. It gets +1/+0 until end of turn for each letter in that word.

Not legal in Commander