Add Eternal Witness

lib/magic/cards/elderfang_ritualist.rb

@@ -10,7 +10,7 @@ module Cards
     class ElderfangRitualist < Creature
       class Choice < Choice::SearchGraveyard
         def choices
-          controller.graveyard
+          controller.graveyard.by_type("Elf")
         end
 
         def choice_amount

lib/magic/cards/eternal_witness.rb

@@ -0,0 +1,26 @@
+module Magic
+  module Cards
+    EternalWitness = Creature("Eternal Witness") do
+      cost green: 1, generic: 2
+      power 2
+      toughness 1
+      creature_type "Human Shaman"
+
+      enters_the_battlefield do
+        game.add_choice(EternalWitness::Choice.new(actor: actor))
+      end
+    end
+
+    class EternalWitness < Creature
+      class Choice < Magic::Choice::May
+        def choices
+          controller.graveyard
+        end
+
+        def resolve!(target:)
+          target.move_to_hand!
+        end
+      end
+    end
+  end
+end

spec/cards/eternal_witness_spec.rb

@@ -0,0 +1,27 @@
+require "spec_helper"
+
+RSpec.describe Magic::Cards::EternalWitness do
+  include_context "two player game"
+
+  context "when it enters" do
+    subject { Card("Eternal Witness") }
+
+    before do
+      p1.graveyard.add(Card("Wood Elves"))
+    end
+
+    it "can choose to return wood elves" do
+      p1.add_mana(green: 3)
+      p1.cast(card: subject) do
+        _1.auto_pay_mana
+      end
+
+      game.stack.resolve!
+
+      game.resolve_choice!(target: p1.graveyard.first)
+
+      expect(p1.hand.by_name("Wood Elves")).to be_one
+      expect(p1.graveyard.by_name("Wood Elves")).to be_none
+    end
+  end
+end