on leftclick:
    if player's tool is diamond pickaxe of efficiency 10 and fortune 10 and unbreaking 777 named "&b&lStarozytny Kilof":
        if clicked block isn't bedrock:
			cancel event
			set block to air
			if clicked block is 153:
           		drop 5 xp
            	set block to air
			else:
				drop clicked block