Viego Shadow Isles Quickstriker 1g

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Viego's Blade of the Ruined King passively grants him Attack Speed based on the number of acquired Souls. As for the active, he strikes a target for physical damage, then adds bonus stacking magic damage to his attacks for the rest of combat.
Quickstriker is a great fit and should help aid you early on while you work towards unlocking the rest of Shadow Isles.
Ashe Freljord Quickstriker 2g

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Ashe is the key to unlocking Tryndamere, but on her own she has some solid utility. Her True Ice Arrow deals physical damage to the target and adjacent enemies, while applying Chill to them.
Many of Freljord's units get amplified against Chilled foes, making Ashe a great starting point to head towards that route.
Twisted Fate Bilgewater Quickstriker 2g

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Twisted Fate, like Ashe, is another catalyst to an Unlockable champion (in this case Graves). His Stacked Deck passively applies bonus magic damage to his attacks, and causes every third toss to send three cards in a cone.
On his own he's relatively basic, but once aligned with his Partner in Crime, he'll setup Graves for the kill and gain more AP in the process.
Draven Noxus Quickstriker 3g

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Draven's Spinning Axes replaces his basic attacks with an empowered axe, dealing additional damage and returning to Draven after each hit. When scoring takedowns, Draven gains a stack of Adoration, doubled if he or Darius got the kill. Every 11 Adoration grants gold.
This unique effect allows Draven to provide a bit of economy, assuming you're doing well enough to secure kills. And getting this gold also unlocks Darius, allowing you to further push that Noxus advantage.
Warwick Zaun Quickstriker 4g

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Warwick shows up only once you have a 2-star Jinx and 2-star Vi. If you can unlock him, his Eternal Hunger ability will provide a nice boon to your allies.
This grants Warwick increased Attack Damage, Attack Speed, Move Speed, and Omnivamp for the rest of combat! Plus, each time you get a takedown, the Zaun trio gains a short Attack Speed boost (perfect with their traits).
It's a fairly specific condition, but Warwick is certainly a worthy payoff.
Yunara Ionia Quickstriker 4g

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Yunara's Transcendent State unlocks infinite range, increased Attack Speed, and replaces all attacks with lasers for a few seconds. These lasers deal physical damage in a line, and bonus true damage on Crits.
She's definitely got carry potential if you can equip her appropriately. Stack some Crit Chance and let the Attack Speed run wild.
Kindred Eternal Quickstriker 5g

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Kindred's unique Eternal trait has the Wolf maul their target with every third attack against the same enemy. The Lamb's Respite ability starts with a dash, then creates a 2-hex radius safe zone, preventing allies within from dying.
Throughout the duration, Kindred's Attack Speed doubles, and causes each attack to fire an additional arrow at a nearby foe. At the end, all allies are healed for a portion of the damage dealt.
This is a situational but powerful effect that could really turn the tide in battle. Assuming the timing and positioning lines up well, Kindred could be an incredible asset to the team.
Thanks for reading! If you want to try and come up with your own team comps for Set 16, check out our Team Builder. For a full overview on the new set, check out our TFT Set 16 Reveal Page.