Silent Sentinel [Commander 2015] Condition:Moderately Played Equipped creature has first strike

Equipped creature has first strike as long as it's blocking or blocked by a Goblin or Orc

Set: World Championship Decks 1999 Type: Artifact Rarity: Rare Cost: {1} {3}

Lightmine Field deals damage to each of those creatures equal to the number of attacking creatures

I see a fully-stocked seagraf

Set: Jumpstart Type: Enchantment Rarity: Rare Cost: {1}{G} Each creature you control assigns combat damage equal to its toughness rather than its power

Silent Sentinel [Commander 2015] Condition:Moderately Played Equipped creature has first strikeSet: Commander 2015 Type: Creature Archon Rarity: Rare Cost: {5}{W}{W} Flying Whenever Silent Sentinel attacks, you may return target enchantment card from your graveyard to the battlefield. It serves a justice higher than the whims of the gods.