True Convictionfinisher$5.52Like Bastion Protector, it rewards you for controlling a strong board and gives your team a major combat boost. It also adds lifelink, making it a potent white finisher in creature-heavy decks.
Avacyn, Angel of Hopeprotection$34.24Provides a powerful indestructible effect for your board, similar to Bastion Protector’s protection theme. It is much more expensive, but is one of the strongest broader protection finishers in white.
Eldrazi Monumentprotection$7.40Gives your creatures indestructible while also making them larger, echoing Bastion Protector’s anthem-plus-protection role. The sacrifice upkeep is the main drawback, but it can be a strong resilient finisher.
Make a StandprotectionBudget$0.21A cheaper one-shot way to protect your board with indestructible, filling a similar defensive role in white. It does not provide a permanent boost, but it can blow out removal or combat damage.
Flawless Maneuverprotection$17.73Functions as a free protection spell in Commander when your commander is out, which is very relevant for the same archetype. It does not boost toughness, but it can save your whole board at key moments.
Unbreakable Formationprotection$1.09A flexible combat trick and board protection spell that can leave your team alive through sweepers, similar to Bastion Protector’s defensive utility. The +1/+1 counter mode also gives a small anthem effect.
Selfless Spiritprotection$1.24Offers repeatable-style board protection by sacrificing itself to give your creatures indestructible. It is not tied to commanders specifically, but it serves a similar protective role in white creature decks.
Darien, King of Kjeldorutility$0.58Another white creature that can help stabilize combat and leverage board presence in a defensive shell. It does not grant indestructible, but it is a useful resilient threat for white token-style strategies.