The new copy will still be a creature (with haste) after Cursed Mirror stops being a copy at the end of the turn
Murmuring Bosk
This means that if Elenda deals damage and her lifelink ability causes her controller's life total to rise above 20, she will immediately be boosted by +1/+1, and if she would have traded with 4/4 worth of blockers, Elenda will instead survive combat and gain menace for the next round
Oh right, and it makes 3/3 fliers up until that point
Kefka, Court Mage / Kefka, Ruler of Ruin Flickering Kefka, Court Mage over and over seems like a great way to deprive your opponents of resources
While modern MTG sets have introduced plenty of powerful creatures, this lion remains a nostalgic favorite, a relic of early Magic: The Gathering design that continues to roar in the world of trading cards