"It has been my honor to improve on Thran's original design. Perhaps history will remember me in some small part for my work." —Urza, in his apprenticeship
As this creature enters, it becomes your choice of a 3/3 artifact creature, a 2/2 artifact creature with flying, or a 1/6 Wall artifact creature with defender in addition to its other types.
{4}, {T}: Create a 1/1 colorless Snake artifact creature token. It has "Whenever this creature deals damage to a player, that player gets a poison counter."
As this creature enters, choose a number between 0 and 7. At the beginning of your upkeep, you may choose a number between 0 and 7. Shapeshifter's power is equal to the last chosen number and its toughness is equal to 7 minus that number.
{1}, {T}, Sacrifice a creature: This artifact deals 2 damage to any target.
"Let any who doubt the evil of using the ancient devices look at this infernal machine. What manner of fiend would design such a sadistic device?" —Sorine Relicbane, Soldevi heretic
At the beginning of your upkeep, put a time counter on this artifact. {1}, {T}, Sacrifice this artifact: This artifact deals damage equal to the number of time counters on it to each creature and each player.
Even the most conservative generals revised their tactics after the Battle of Sarinth, during which a handful of peasant-pikemen held off a trio of rampaging craw wurms.
As long as this artifact is untapped, players can't untap more than one land during their untap steps.
"When once winter has ahold, Not willingly does she withdraw Her icy touch, wistfully caressing— The deepened air sleeps its cold." —Aline Corralurn, "Late Thaw"
This land enters tapped. You may choose not to untap this land during your untap step. At the beginning of your upkeep, if this land is tapped, put a storage counter on it. {T}, Remove any number of storage counters from this land: Add {B} for each storage counter removed this way.
This land enters tapped. You may choose not to untap this land during your untap step. At the beginning of your upkeep, if this land is tapped, put a storage counter on it. {T}, Remove any number of storage counters from this land: Add {R} for each storage counter removed this way.