Necrosquito

Whenever an artifact is put into a graveyard from the battlefield, you may put a +1/+1 counter on this creature.

Menace (This creature can't be blocked except by two or more creatures.)

Whenever one or more artifacts and/or creatures you control are put into a graveyard from the battlefield, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Flying

When this creature enters, you may sacrifice an artifact or creature. If you do, draw a card.

Whenever another creature you control dies, if it had counters on it, put its counters on this creature.

Whenever another creature you control or a land you control is put into a graveyard from the battlefield, put a +1/+1 counter on target creature you control.

At the beginning of your end step, if an artifact or creature was put into a graveyard from the battlefield this turn, put a +1/+1 counter on this creature.

Flying

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.

When this creature dies, return another target creature card with mana value less than or equal to this creature's power from your graveyard to the battlefield.