Leblanc (lvl 2)

When an opponent cast a creature spell, create
a 2/1 Plot black enchantement creature
token with lifelink, "cannot be blocked" and
"when this creature dies, draw a card".
This token enters the battlefield tapped and attacking.
{t}: Until the end of the turn, target creature get
"when this creature inflict X damages to a player,
its controler loses X life". You may use this
ability as an instant.