Tyranid (RULES)

Instinctive Behaviour: A creature with this ability
can attach itself to a creature with Synapse, if it
does so, it can ignore it's Instinctive Behaviour.
Synapse X: X Creatures with Instinctive
Behaviour can attach themselves to this creature.
Instinctive Behaviour: Kill: A creature with the
Instinctive Behaviour: Kill ability always has to
attack if it can. If it does so, it will not untap
during your next untap step.
Instinctive Behaviour: Lurk: A creature with
Instinc