Extraplanar Lens [Kaladesh Inventions] Human Chief Commander can't attack unless

Chief Commander can't attack unless defending player controls an Island

Set: Kaladesh Prerelease Promos Type: Enchantment Rarity: Rare Cost: {W} Creatures your opponents control enter the battlefield tapped

We shall suffer turmoil equal to that which we have wrought

Set: From the Vault: Relics Type: Artifact Mythic Cost: {0} Sacrifice a land: You gain 2 life

If that card's converted mana cost is less than or equal to the sacrificed artifact's converted mana cost

Extraplanar Lens [Kaladesh Inventions] Human Chief Commander can't attack unlessSet: Kaladesh Inventions Type: Artifact Mythic Cost: {3} Imprint When Extraplanar Lens enters the battlefield, you may exile target land you control. Whenever a land with the same name as the exiled card is tapped for mana, its controller adds one mana of any type that land produced.