Sir Lancelot, Edge of Chaos

[On Play] If there are no other units with "Knights" in its traits on the field; You may play a unit with "Knights" in its traits from your discard pile with the cost reduced by {2}.

[Once per Turn] When a unit with "Knight" in its traits is played; K.O. an enemy unit with 5 or less strength.

[When Attacking] K.O. an enemy unit with 2 or less strength. For every other 2 units with "Knight" in their traits that you control, increase the limit by 1.