Knight's Legacy

When Knight's Legacy enters the battlefield, put
a Quest counter on target Knight. Whenever a
creature you control attacks, if it has a Quest
counter, put another Quset counter on it, and
choose one:
• Gain 6 life.
• Deal 4 damage to any target.
Remove 3 Quest counters from target creature:
It gains Double Strike, Trample, and +5/+5
until end of turn.