Dormant Volcano

This land enters tapped.
When this land enters, sacrifice it unless you return an untapped Mountain you control to its owner's hand.
{T}: Add {C}{R}.

Commander Anthology Volume II

Dormant Volcano enters the battlefield tapped.
When Dormant Volcano enters the battlefield, sacrifice it unless you return an untapped Mountain you control to its owner's hand.
{T}: Add {C}{R}.

Commander 2014

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

Visions

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

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