Other artifact creatures you control have
haste (This creature can attack, and as soon as it comes under your control.).
Whenever one or more artifact creatures you control attack, Alibou, Ancient Witness deals X damage to any target and you
scry X
(Look at the top X cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.), where X is the number of tapped artifacts you control.