Extirpate [Planar Chaos] Avatar whenever you tap a land

whenever you tap a land for mana

Reveal cards from the top of your library until you reveal a nonland permanent card

there is an additional combat phase

Set: Kaladesh Inventions Type: Artifact Creature — Shapeshifter Rarity: Mythic Cost: {6} Imprint — When Duplicant enters the battlefield

Ghirapur is a beacon of inspiration

Extirpate [Planar Chaos] Avatar whenever you tap a landSet: Planar Chaos Type: Instant Rarity: Rare Cost: {B} Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Choose target card in a graveyard other than a basic land card. Search its owner's graveyard, hand, and library for all cards with the same name as that card and exile them. Then that player shuffles.