Jarl of Knightly Valor

First strike, Vigilance
Knight spells you cast cost {w} less to cast. This effect reduces only the amount of colored mana you pay. (For example, if you cast a Knight spell
with mana cost {2}{w}, it costs {2} to cast.)
Knights you control have provoke (Whenever this attacks, you may have target creature defending player controls untap and block it if able.)