I'm really surprised you are not playing Tuskguard Captain in this desk. It would give all of your +1/+1 creatures trample.
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Just get to play the creature without paying the mana cost. The face up effect only happens when the card transitions from face-down to face up.
The card comes into play face up, so you get to put down a creature with Morph face up for free (ie. Sagu Mauler normally costs 6 to cast normally, it'd be free with Dermoplasm)