Even if your opponent plays a larger creature than you, Sheoldred can either trade up for you, removing the larger threat, or helping you sustain with her life gain.
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Unsummon and Flame Slash are both undercost effects on their respective cards as both are situational
The variety of colors won't astonish your playgroup, but this is a solid binder that saves you some money
If people are afraid to buy and trade cards lest they receive a fake, card values (both real and fake) will plummet
Time counters were plentiful in the MTG Doctor Who set, and we've seen some new cards sporting the same keyword in the upcoming Lost Caverns of Ixalan