Frenzy X, where X is the number of artifacts you control. (Whenever this creature attacks and isn’t blocked, it gets +X/+0 until end of turn.)

Whenever Nicholas attacks and isn't blocked, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Whenever Nicholas becomes blocked, he connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)