What does SPEED: Reaction allow you to do?

SPEED: Reaction is a game mechanic that provides players with the flexibility to respond to various in-game situations as they occur. When a card or ability has this characteristic, it can be played at any moment an action can be undertaken, meaning it is not restricted to a specific phase or condition.

This allows for dynamic interplay during the game, enabling players to react to their opponent's moves or to trigger effects that may benefit their strategy immediately. The fact that SPEED: Reaction applies broadly to any time an action can be played strengthens strategic options, allowing for surprises and counterplays that can significantly influence the outcome of the game.

In contrast, the other choices are limited in scope and timing. Playing only during a specific phase or under certain conditions would significantly reduce the strategic options available to the player. Thus, the defining feature of SPEED: Reaction is its versatility, allowing plays at any opportune moment in the game's flow.