Diregraf Colossus [Shadows over Innistrad Promos] Commander Anthology whenever either of those creatures

whenever either of those creatures deals combat damage

Set: Time Spiral Timeshifted Type: Instant Rarity: Rare Cost: {G} Counter target instant or Aura spell that targets a permanent you control

Whenever enchanted creature deals combat damage to a player

Set: Khans of Tarkir Type: Land Rare Cost: {T}

Diregraf Colossus [Shadows over Innistrad Promos] Commander Anthology whenever either of those creaturesSet: Shadows over Innistrad Promos Type: Creature Zombie Giant Rare Cost: {2}{B} Diregraf Colossus enters the battlefield with a +1 +1 counter on it for each Zombie card in your graveyard. Whenever you cast a Zombie spell, create a tapped 2 2 black Zombie creature token.