With Flatline, you dont have to both with table-wide removal to get past your opponents biggest blockers
Tutors are especially important in Slivers because slivers do literally everything but the trick is to find the sliver for any situation, which we solve with tutors
I love Siege-Gang Lieutenant , but every planeswalker in this deck already produces tokens, and this officer can only sacrifice his own Goblins, so he gets the axe
Twobrid mana is something that we've tried out numerous times in sets
You tutor for three basics, ramp two tapped, and then the other into your hand
Entering as a 2/3 with Daybound that can provide target creature with +1/+0 and haste until the end of turn, this creature becomes strictly more powerful when it's night