Add Tormod's Crypt

Fixes #252

lib/magic/cards/tormods_crypt.rb

@@ -0,0 +1,30 @@
+module Magic
+  module Cards
+    TormodsCrypt = Artifact("Tormod's Crypt") do
+      cost generic: 0
+    end
+
+    class TormodsCrypt < Artifact
+      class ActivatedAbility < Magic::ActivatedAbility
+        def costs
+          [
+            Costs::Tap.new(source),
+            Costs::Sacrifice.new(source: source),
+          ]
+        end
+
+        def target_choices
+          game.players
+        end
+
+        def resolve!(target:)
+          target.graveyard.each do |card|
+            trigger_effect(:exile, target: card)
+          end
+        end
+      end
+
+      def activated_abilities = [ActivatedAbility]
+    end
+  end
+end

lib/magic/zone.rb

@@ -3,7 +3,7 @@ class Zone
     extend Forwardable
     include Enumerable
 
-    def_delegators :@cards, :each, :last, :shift, :unshift, :push, :<<, :by_name, :creatures, :by_any_type, :basic_lands, :controlled_by, :cmc_lte, :by_card
+    def_delegators :@cards, :each, :last, :shift, :unshift, :push, :empty?, :<<, :by_name, :creatures, :by_any_type, :basic_lands, :controlled_by, :cmc_lte, :by_card
 
     attr_reader :owner, :cards
 

spec/cards/tormods_crypt_spec.rb

@@ -0,0 +1,24 @@
+require 'spec_helper'
+
+RSpec.describe Magic::Cards::TormodsCrypt do
+  include_context "two player game"
+  subject(:permanent) { ResolvePermanent("Tormod's Crypt") }
+
+  let(:wood_elves) { Card("Wood Elves", owner: p2) }
+
+  before do
+    wood_elves.move_to_graveyard!
+  end
+
+  it "taps and sacrifices to exile a player's graveyard" do
+    p1.activate_ability(ability: permanent.activated_abilities.first) do
+      _1.pay_sacrifice(permanent)
+      _1.targeting(p2)
+    end
+
+    game.tick!
+
+    expect(p2.graveyard).to be_empty
+    expect(wood_elves.zone).to be_exile
+  end
+end