Aatrox N.O.V.A. Bastion 1g

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Aatrox's Stellar Slash heals himself, then deals physical damage to the target. As a N.O.V.A. champion, his power surge allows allies to Shred and Sunder enemies with their damage.
On top of that, if selected as the "Striker", he cleaves the battlefield, damaging and knocking up all enemies. An incredible effect for a 1-cost frontliner.
Poppy Meeple Bastion 1g

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Poppy can grant herself a Shield while also providing Armor and Magic Resistance to nearby allies (throughout its duration). Combined with Bastion, it's a great boost to a team's early game defenses.
Jax Stargazer Bastion 2g

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Jax's Counter Star-ike puts him into a defensive stance for a moment, reducing damage dealt and creating a Shield. Once the stance concludes, he strikes enemies within range, stunning them.
AoE CC is generally quite a premium, and considering it comes early as a 2-cost unit, Jax looks like a great choice to invest into.
Ornn Space Groove Bastion 3g

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Ornn has the ability to forge temporary completed items at the start of every combat (equips to himself). If three items are already attached, then one of them is chosen at random to become Radiant for the fight.
It's a unique passive that may incentivize equipping Ornn, as Radiant items can offer a huge power spike. Either way, he stands out among others!
Rammus Meeple Bastion 4g

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Rammus passively reduces the damage of incoming attacks when Meeple is online, getting stronger depending on the trait's level.
As for his active ability, he Shields before striking the most enemies within a three hex line, dealing magic damage to them. This scales off both AP and Armor, allowing you to invest in his defenses and still deal good damage.
Shen Bulwark Bastion 5g

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Shen's unique Bulwark trait allows the player to summon a placeable relic. Once combat begins, it provides a max Health Shield and Attack Speed buff to allies adjacent to it. Being able to move it around makes it even better, and honestly justifies Shen's inclusion just for the utility.
As for Shen himself, his attacks passively deal bonus magic damage, eventually turning into true damage after enough casts of Reality Tear. When this ability is used, he gains a Shield as he slices open a rift on the largest cluster of champions.
Enemies within suffer an Attack Speed drop, whereas allies gain an Attack Speed boost. Both effects decay rapidly over the duration. Overall, Shen offers a lot of value, and definitely meets expectations as a 5-cost unit.
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