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Lets say my opponent have Zada, Hedron Grinder in play. Then proceeds to use instant spell that target Zada to trigger its effect. Then i play Stasis Snare in response to his instant spell. Does Zada, Hedron Grinder still resolves even if my Stasis Snare resolves first by exiling Zada? If its effect still resolves, how do you prevent Zada from using its ability if i have the instant removal (stasis snare, lightning axe, grasp of darkness etc...) in my hand that can be played in response ?