Karru

Die Karru kommt getappt ins Spiel.
Wenn die Karru ins Spiel kommt, bringe eine ungetappte Ebene, die Du kontrollierst, zurück auf die Hand ihres Besitzers oder begrabe die Karru.
{T}: Erhöhe Deinen Manavorrat um {W} und ein farbloses Mana.

Karrú

Karoo

乾燥高原

Karoo enters tapped.
When Karoo enters, sacrifice it unless you return an untapped Plains you control to its owner's hand.
{T}: Add {C}{W}.

The List

Commander 2014

Karoo enters the battlefield tapped.
When Karoo enters the battlefield, sacrifice it unless you return an untapped Plains you control to its owner's hand.
{T}: Add {1}{W} to your mana pool.

Visions

Karoo comes into play tapped.
When Karoo comes into play, return an untapped plains you control to owner's hand or bury Karoo.
oc
T: Add o
W and one colorless mana to your mana pool.

This has a triggered ability when it enters, not a replacement effect, as previously worded.