Flying, vigilance, indestructible
When The Sentry enters, target opponent creates The Void, a legendary 5/5 black Horror Villain creature token with flying, indestructible, and "The Void attacks each combat if able."
Lyra DawnbringerfinisherBudget$3.01A white legendary flying threat that stabilizes the board and often serves as a resilient finisher. While not indestructible, it fills a similar high-impact creature role in mono-white.
Avacyn, Angel of Hopeprotection$34.24A powerful indestructible flying threat that provides massive board resilience. It is much larger and higher-impact, but shares the same protection-focused, evasive role.
Serra ParagonutilityBudget$6.20A resilient white value creature that helps grind through removal and maintain board presence. It is less of a pure attacker, but similarly represents a sticky, high-value white permanent.
Angel of JubilationfinisherBudget$10.19A vigilant flying white creature that functions as a sturdy combat-oriented threat. It lacks indestructible, but overlaps strongly in evasive board-stabilizing gameplay.
Luminous BroodmothprotectionBudget$0.78A white flying creature that makes your board harder to permanently answer. It is more of a recursion engine than a beater, but shares the durable creature theme.
Baneslayer AngelfinisherBudget$6.11A classic white evasive finisher that takes over combat quickly. It is less defensive than The Sentry, but occupies a similar premium white creature slot.
Reya DawnbringerfinisherBudget$4.87A larger white flying legendary creature that generates long-game inevitability. It is slower and more expensive, but fits the same mythic white finisher mold.
Selfless SpiritprotectionBudget$1.24A cheap evasive white creature that protects your board from sweepers. It is much smaller, but serves a similar defensive, resilient white role.