Teemo, the Swift Scout

Shroud, nonbasic landwalk
Whenever Teemo, the Swift Scout deals combat
damage to a player it explores.
Whenever Teemo explores, create a colourless artifact token named Suspicious Mushroom.
It has "{t}, Sacrifice this artifact: Put two -1/-1 counters on target attacking creature"
Whenever a creature with a -1/-1 counter on it
dies, draw a card.