Add Temple of Epiphany

Fixes #263

lib/magic/cards/temple_of_epiphany.rb

@@ -0,0 +1,23 @@
+module Magic
+  module Cards
+    TempleOfEpiphany = Card("Temple of Epiphany") do
+      type "Land"
+
+      enters_the_battlefield do
+        game.add_choice(Choice::Scry.new(source: source))
+      end
+    end
+
+    class TempleOfEpiphany < Card
+      def enters_tapped?
+        true
+      end
+
+      class ManaAbility < Magic::TapManaAbility
+        choices :blue, :red
+      end
+
+      def activated_abilities = [ManaAbility]
+    end
+  end
+end

lib/magic/choice/scry.rb

@@ -3,12 +3,16 @@ class Choice
     class Scry < Choice
       attr_reader :player, :amount
 
-      def initialize(source:, amount:)
+      def initialize(source:, amount: 1)
         @source = source
         @amount = amount
         super(source: source)
       end
 
+      def choices
+        controller.library.first(amount)
+      end
+
       def resolve!(top: [], bottom: [])
         source.controller.scry(amount:, top:, bottom:)
       end

spec/cards/temple_of_epiphany_spec.rb

@@ -0,0 +1,48 @@
+require 'spec_helper'
+
+RSpec.describe Magic::Cards::TempleOfEpiphany do
+  include_context "two player game"
+
+  let(:card) { Card("Temple Of Epiphany") }
+
+  let!(:permanent) do
+    p1.play_land(land: card)
+    p1.permanents.by_name("Temple of Epiphany").first
+  end
+
+  it "enters the battlefield tapped" do
+    game.stack.resolve!
+    expect(permanent).to be_tapped
+  end
+
+  it "scries one" do
+    choice = game.choices.last
+    expect(choice).to be_a(Magic::Choice::Scry)
+
+    game.resolve_choice!(top: [choice.choices.first])
+  end
+
+  it "taps for blue" do
+    p1.activate_mana_ability(ability: permanent.activated_abilities.first) do
+      _1.choose(:blue)
+    end
+
+    expect(p1.mana_pool[:blue]).to eq(1)
+  end
+
+  it "taps for red" do
+    p1.activate_mana_ability(ability: permanent.activated_abilities.first) do
+      _1.choose(:red)
+    end
+
+    expect(p1.mana_pool[:red]).to eq(1)
+  end
+
+  it "cannot tap for another color" do
+    expect {
+      p1.activate_mana_ability(ability: permanent.activated_abilities.first) do
+        _1.choose(:green)
+      end
+    }.to raise_error("Invalid choice made for mana ability:")
+  end
+end