To bolster 2, put two +1/+1 counters on the creature with the least toughness among creatures you control
Card Images Product Information Magic: The Gathering Tarkir Dragonstorm Play Booster Pack Product Summary: - Tarkir faces a full-scale draconic assault, pitting clan against clan and all of civilization against a maelstrom of wings, claws, and fire
Of course things change
At 5 mana, thats a little later in the game than wed like to start generating experience, but luckily Otharri can recur itself with those Rebel tokens it creates, so well always get the chance to make more on the following turn
With Laboratory Maniac on the field, the alternate lose condition of running out of cards to draw instead becomes a win condition, encouraging you to pour through your 100 card deck with the intention of running out
Adding reach and trample to an even larger creature provides you with some serious beatstick capability