Bale, Thorn Knight

Bale, Thorn Knight enters the battlefield with
X +1/+1 counters on it.
Knight or Mercenary cards cost {w}{u}{b}{r}{g}
less to cast. This effect only reduces the amount
of colored mana you pay.
{t}{2}: Untap two target Knight or Mercenary permanents.
{x}, {t} the Bonerose Keep: Transform Bale,
Thorn Knight into Bale, Lord Protector.