We love Optimus Prime as much as the next nerd, but unless Urza is building him, its an odd decision
Dusk rids of all creatures beyond 3 power and then Dawn returns all the creatures from your graveyard to hand with 2 or less power so you have access to your resources after the board wipe
While Standard does change fairly regularly, weve only just seen the launch of Outlaws of Thunder Junction and were still just under three months away from Bloomburrow and the next rotation, so this is the most stable the format tends to be
-10 Destroy all permanents
Artifact Creature: Baleful StrixBaleful Strix, 152,238 Inclusions Artifact Land: Mistvault BridgeMistvault Bridge, 56284 Enchantment Creature: Spirited CompanionSpirited Companion, 82248 Kindred Enchantment: Faerie TauntingsFaerie Tauntings, 4836 Kindred Instant: Reach of BranchesReach of Branches, 3401 Instant Sorcery: Consecrate // ConsumeConsecrate // Consume, 1437 Kindred Sorcery: Summon the SchoolSummon the School, 1003 Whether your colors allow for Baleful StrixBaleful Strix or Spirited CompanionSpirited Companion, you're going to end up playing them
Some of the land destroyer cards I looked at to lower the mana curve require multiple or in their casting cost