Phyrexian Dreadnought
About this card
Phyrexian Dreadnought is a creature artifact card in Magic: The Gathering with mana value 1 (color identity: colorless). First printed in Mirage (1996); 2 paper printings in total. Legal in Commander, Legacy and Vintage. Cardmarket price: €233.91. It is on the Reserved List: Wizards will not reprint it.
Phyrexian Dreadnought 
When this creature enters, sacrifice it unless you sacrifice any number of creatures with total power 12 or greater.
Name in each language
Legality
Rulings
2013-04-15
If you are unable to sacrifice 12 power worth of creatures, then you cannot choose that option; in that case, you must sacrifice Phyrexian Dreadnought.
2007-07-15
Reverted to its original wording, this now has an "enters" triggered ability. During resolution of the triggered ability, you choose one option or the other.
2007-07-15
If the Dreadnought is no longer on the battlefield when the triggered ability resolves, you may still choose either option.
2004-10-04
The sacrifices are simultaneous, not one at a time.
2004-10-04
Phasing in does not trigger "enters" abilities, so you don't have to sacrifice again if it phases in.

