Once per turn, if this card battled a monster this Battle Phase, you can (Quick Effect): Immediately after this effect resolves, Normal Summon 1 Cyberse-Type monster. If this face-up card you control leaves the field because of an opponent's card effect: Draw 1 card.
I'm not sure why Link Streamer, but yes, for an N rarity card, this is quite a good low level monster.
The 2nd effect reminds me of samurai skull. No matter how the opponent get rid of this card from the field except in battle, of course, like destroyed via card effects (black rose), banished (malevolent sin), bounced/return to hand (cyber slash harpie) or sent to GY without being destroyed (dakini) then you still get the benefit.