It's unclear whether this was the most necessary of the Slivers, but it was the one that frustrated the most opposing plans to deal with the problem and even opened up new game plans when the card advantage resulting from saving your creatures could allow Sliver decks to go the control route when backed up by counters and removal spells
You can play a five drop
There are 46 Avatar The Last Airbender pack themes altogether, so you can get different character, scene, and elemental combinations without needing to draft or hunt down singles
cards like Elvish Champion and Elvish Archdruid add 2 power and 2 mana when they come into play
Honorable Mentions The Locust God, Izoni, Thousand-Eyed, and Old Rutstein all generate Insect tokens of some description, but they dont necessarily want you to build around the insect theme
So grab the best ones you need, and get your card drawing on!