Crime Novelist

Whenever you expend 4, put a +1/+1 counter on this creature. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

: Add or .

Sacrifice this creature: Add .

, Sacrifice an artifact: Add .

Flying

When this creature enters, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Whenever you sacrifice an artifact, put a +1/+1 counter on this creature.

Whenever you cast a red spell, if this creature has fewer than three +1/+1 counters on it, put a +1/+1 counter on this creature.

Remove three +1/+1 counters from this creature: Add .

Sacrifice this creature: Add .