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he is mishara older bother and he saves dominaria form yawgamoth and he is also very powerful planeswalker

He's a Planeswalker from Dominaria's distant past. He and his brother, Mishra, are responsible for 95% of the disasters that occur on any given plane.

Seriously, though. Both were trained under Tocasia, but due to some sibling issue or another, they started fighting each other, which became known as 'the Brother's War'. Which happens sometime before the timeline of Alpha, Beta and so on.

After the Brother's War, Urza and Mishra pretty much fall off the scope until the Urza's Saga block, when Urza once again returns, create's Karn and the Weatherlight, and does all sorts of other stuff, including snuffing out Serra's realm to power something or other.

Flash forward to the Invasion Block, when Urza assembles a team of planeswalkers to combat the Phyrexian invasion. Excessive amounts of destruction occur, mostly due to Urza not being able to construct a plan that doesn't kill almost everyone in the process.

Further forward, we know that Urza and Mishra are the ones ultimately responsible for the rifts that are the cause of the Time Spiral Block. It remains to be seen if either of the two bone heads will actually help FIX the damage.

Urza snuffs out at least one plane other than Dominaria.



I'm sorry, but I don't take the plane-wide destruction of the Brother's War or the Tolarian cataclysm as 'meant well'.



Huh? Try using sentences, I can understand you much better that way.



Time Spiral Block. You know, the sets that came out in Fall 06, Winter 06, and the one that prereleases this weekend?

hmmmm me has heard nothing of this time spiral thingie you speak of and how can they fix it they are both dead or well Urza is at lest also urza is just well absent minded and seeks to save dominaria and also the planar collaspe you speak of if i am not mistaken was NOT CAUSED by urza

umm Urza caused them by building a time machien and changing the past it resulted in hte time machine blowing up and blowing the island it was on into little hellish timezones where time space continum moves at differnt speeds

........i though you were talking about time rifts not planar rifts.....................

Well your somewhat right... but he and Mishra were brothers, who found the Thran ruins(which later were discovered to be a portal to Phyrexia)... inside they found a stone that held the essanse of a Planeswalker that held the portal to phyrexia closed. The stone split into two and Urza and Mishra each got a different peice, because of this they became quite jelious of each other. Eventually Mishra tried to get Urza's "might" stone from him by force, Tocasia trying to stop them was killed in the process and they each went their separet ways. Over time they each gained power in the plane of Dominaria, eventually leading to the Brothers war, this war caused islands to sink and several world powers to fall... they also redused much of the plane into glass or uninhabbitable areas. At the end however Urza used a newly discovered magic to kill his borther, as he saw how monstrus the war really was. After that Urza's "might stone" and Mishra's "weak stone" combined into Urza, and gave him the power to planeswalk. He made many friends in the galaxy like Xantcha and Serra(another planeswalker). After awile he returned back to Dominaria to see if he couldn't close the portal to phyrexia forever, this backfired as Serra's plane(which was infested with Phyrexians) was absorbed in the process, lossing him a great ally. Later on when he finally started his full scale war with Phyrexia his planeswalker "apprentiss" took a few continents away from Dominaria, just in case they where to be destroyed in the war. The bad part is that at the end of this war(Phyrexia being the one who lost) Urza was thought to be killed, no one really knows whether he is or not, as he hasn't been in the story yet