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If I put Holy Spirit in play with Matthias, do I search for a Fruit of the Spirit immediately? Based on how Leviathan works when he blocks, I'm thinking this might actually work?
Triggered effects may be optional or mandatory. Optional triggered effects will be designated with a “may”or similar wording, while mandatory triggered effects simply describe the outcome without giving a choice. Mandatory triggered effects that are not negated persist at least until the end of the current phase, even if the card leaves play or set aside, unless otherwise specified on the card. If the triggering event deactivates the ability without interrupting or negating it, then the triggered effect can still be activated. If the triggering event activates the ability, then the triggered effect can still be activated. Otherwise, optional triggered effects may only be activated while the card it is on is controlled by the holder and is either in play, Land of Redemption or set-aside area.