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MIR #315

Phyrexian Dreadnought

Artifact Creature — Phyrexian Dreadnought
Phyrexian Dreadnought
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Phyrexian Dreadnought

Trample When this creature enters,sacrificeit unless yousacrificeany number of creatures with total power 12 or greater.

Card Information

Color: C
Identifies: C
Cost:
CMC: 1
Types: Artifact Creature
Subtypes: Phyrexian Dreadnought
P/T: 12 / 12
Rarity: rare
Languages:
Layout: normal
Rank:
#9,649
Saltiness:
0.74 / 4.0

Official Rulings

2004-10-04
Phasing in does not trigger "enters" abilities, so you don't have to sacrifice again if it phases in.
2004-10-04
The sacrifices are simultaneous, not one at a time.
2007-07-15
If the Dreadnought is no longer on the battlefield when the triggered ability resolves, you may still choose either option.
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.
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.