Watch clip from upcoming episode 'Al Sah-him'

CW has released the first clip for this week's Episode 20 of 'Arrow' titled  'Al Sah-him'.

Plot

Oliver goes through a rigorous transformation. The League of Assassins sets their sites on Nyssa, who is back in Starling City training Laurel.

When Nyssa realizes they are coming, she arms up to face them alone but Laurel asks Felicity and Diggle to help protect her new friend.”

'Al Sah-him' will air on April 29.