Hover Barrierutility$0.85One-mana defender that helps stabilize early and fits wall-based decks. It is a similar cheap defensive body, though it does not gain life.
Wall of Omenscard_drawBudget$0.28Cheap white defender that replaces itself and helps you develop while holding the ground. It serves a similar early defensive role with more card advantage.
Wall of EssenceutilityBudget$0.27Defender that rewards blocking by gaining life, closely mirroring the defensive life-gain play pattern. It triggers on damage rather than on blocking defender creatures.
Lone MissionaryutilityBudget$0.28A low-cost white creature that gains life on entry and helps stabilize against aggressive decks. It is not a defender, but it fills a similar early defensive role.
Soul Wardenutility$2.76One-mana life-gain creature that supports stalling and padding your life total. It is broader than Perimeter Captain, but serves the same anti-aggro purpose.
Benevolent BodyguardprotectionBudget$0.29Cheap white defensive creature that protects your team and can buy time against attackers. It does not gain life, but it is similarly aimed at early survival.
Shield Sphereutility$7.84Very cheap defender that blocks efficiently in decks wanting to stall early aggression. It lacks the life-gain trigger but serves the same wall-like defensive function.
Wall of HopeutilityBudget$0.25Defender that gains life when it blocks, making it one of the closest functional cousins. It is more directly defensive, but the life-gain/stall plan is very similar.