Shield MareHow it works & interactions with other cards

Dual Trigger Mechanics

Shield Mare features a versatile triggered ability that fires under two conditions: when it enters the battlefield or when it becomes the target of a spell or ability controlled by an opponent. Importantly, the life gain occurs even if the spell targeting it is countered or if the Mare leaves the battlefield in response.

Evasion and Protection

The creature possesses a static ability that prevents it from being blocked by red creatures. This is not 'Protection from Red,' so it can still be targeted by red spells; however, doing so will grant its controller 3 life, effectively neutralizing the impact of many red burn spells.

Resolving the Triggers

When Shield Mare enters, the trigger is put on the stack. If an opponent later casts a spell like a removal spell targeting it, that new trigger is put on the stack above the opponent's spell. The life gain resolves first, ensuring you receive the health even if the Mare is destroyed.

Common Mistakes

Players often forget that the 'target' trigger applies to abilities as well as spells. This includes triggered abilities from permanents or activated abilities from lands. Additionally, targeting your own Shield Mare with your own spells will not trigger the life gain; it must be an opponent's effect.

Interaction examples

The Horse and the Throne

Roaming Throne

If you have Roaming Throne on the battlefield with 'Horse' chosen as the creature type, Shield Mare's triggers will double. When Shield Mare enters, you will gain 3 life twice (6 total). Similarly, if an opponent targets Shield Mare with a spell, the trigger fires twice, granting you 6 life before the opponent's spell resolves.

Curve Efficiency

Solemn Simulacrum

In a mid-range strategy, Shield Mare provides the early defensive buffer needed to reach your higher-cost plays. Playing Shield Mare on turn three nets you 3 life and a blocker. Following up with Solemn Simulacrum on turn four allows you to ramp safely, knowing the Mare has already cushioned your life total against early aggression.