This card may be just what is needed to get the edge in the heat of a battle
Kefka, Court Mage // Kefka, Ruler of Ruin I just wrote a deck around this Grixis leader you can find here - ( This five-drop 4/5 transforming body has an attack trigger to make everyone discard - you too, but no worries since you'll draw equal to the number of card types discarded
Exalted vs
Interaction versus removal has never been better, and though March of Swirling Mists is likely to be better for most decks, Slip Out the Back definitely has a place, even outside of +1/+1 counters decks
(The copy becomes a token.) A resolving copy of a permanent spell becomes a token, so the token isn't "created." Effects that care about a token being created won't interact with a token that enters the battlefield from Mendicant Core's last ability
For example, if two creatures you control with lifelink deal combat damage at the same time, you will gain 2 additional life from Cleric Class's first ability and its level 2 ability will trigger twice