Sir Robin the not as brave

Vigilance
Whenever an opponent cast a creature or a spell
sir Robin the not as brave runs away until the
beginning of your next turn.
" Sir Robin the not quite so brave as sir Lancelot,
Who had nearly fought the dragon of Angnor,
Who nearly stood up to the vicious Chiken of Bristol,
And who had personally wet himself at the battle of
Badon Hill."