The kicker is drawing the extra card at X=5 or greater, making Mawloc a clean 3-for-1 that leaves a large threat on board
But here is this set we can kick Dismantling Blow for two cards, kick Orim's Thunder to burn down a creature, Aura Mutation for some 1/1 Saprolings, drawing a card off Aura Blast, and many more effects in just one Block
Instead I found a deck that is capable of huge outbursts of damage because of Slip Through Space and Titans Strength but can also win games going long on the back of Jace, Vryns Prodigy, Abbot of Keral Keep, and Treasure Cruise
This list was very hard to do and highlighted a significant aspect of cube design
And like many Red cards in this oeuvre, (See Phoenixes and Hammer of Bogardan for examples), when the creature it enchants dies, you return this immediately to your hand for another go, giving you a solid aura that continues to turn any card you control into a major threat
I switched as soon as I could because you have to unlock them first which is....sad