mtg whenever you draw a card gain life Phial of Galadriel (LTR) #699 We've seen white get repeatable

Did I mention she's really vigilant in searching out heresy

It helps power out expensive Commanders, but does only this without jumping through hoops involving Doubling Cube, it cant cast any other spell

A deck aiming for that would have a solid 13 plays on turn one, with 10+ being acceptable, in order to blitz on turn 3

Your chosen commander must be either a legendary creature, or a card whose rules specifically state that it can be your commander

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Kopala, Warden of Waves Merfolk has lots of options for commanders