Lets look at Poison Dart Frogs text box and break it down line by line
Celestial Crusader is a card you can use offensively, and it can also be a clutch protection spell in a pinch
Summary Donald Duck's valuable cards include Musketeer ($0.13), Lively Pirate ($0.19), and Musketeer Soldier ($0.26)
(2015-02-25) Keeper of the Lens doesnt let you look at other players face-down spells while theyre on the stack
Top 11 Artifact Creature Cost Reducers Foundry InspectorFoundry Inspector Etherium SculptorEtherium Sculptor Cloud KeyCloud Key Jhoira's FamiliarJhoira's Familiar Ugin, the IneffableUgin, the Ineffable Enthusiastic MechanautEnthusiastic Mechanaut Starnheim CourserStarnheim Courser Urza, Lord ProtectorUrza, Lord Protector Tamiyo, Compleated SageTamiyo, Compleated Sage Saheeli, Filigree MasterSaheeli, Filigree Master Herald of KozilekHerald of Kozilek Why 11
Emerge [cost] means You may cast this spell by paying [cost] and sacrificing a creature rather than paying its mana cost and If you chose to pay this spells emerge cost, its total cost is reduced by an amount of generic mana equal to the sacrificed creatures converted mana cost." Paying a cards emerge cost follows the rules for paying alternative costs in rules 601.2b and 601.2fh
