In some cases, pairing two soulbond creatures together is the best play. Sometimes different choices can pay off. If you pair Tandem Lookout and Latch Seeker, Latch Seeker becomes an unblockable creature that lets you draw a card whenever it deals damage to an opponent! And pairing anything to Flowering Lumberknot is a good idea, since this four-mana 5/5 can attack or block only while paired.
Naturally, the deck also has a few tricks in store. Joint Assault gives +2/+2 to any creature, whether it's paired or not-and if it is, the other creature gets the bonus too! Wolfir Avenger's flash ability lets you create a pair when your opponent's not expecting it. Both Nephalia Smuggler and Deadeye Navigator let you exile a creature and immediately return it to the battlefield, which can let it dodge a removal spell or set up a new soulbond pair. And if all else fails, a timely Overrun can quickly end the game in your favor.
If you'd like to personalize the deck, the first move is probably to add in more Wolfir Silverhearts. Other good options include Soul of the Harvest, a 6/6 creature, which lets you draw a card each time you put a creature onto the battlefield, and Descendants' Path, which could net you a free creature each turn.