Wizards of the Coast took a technique used in its Japanese trading card game Duel Masters and printed text on both sides of the card to represent people transforming into monsters and back again (something that happens alarmingly regularly in Innistrad)
Accursed Duneyard gets a shout out here because it names wraiths among the creature types it can regenerate
Aura-voltron is a legitimate, cheap way into the archetype just respect the two-for-one math
Similar to how Ariel can deal damage without challenging, Tinker can too as soon as you play her, causing one damage to each of the opponent's characters
Because she gets the trigger at the end of the turn, rather than during your upkeep, she cannot be answered on other turns, or give folks a full round of answers
With a staggeringly high cost of fifteen mana to cast, Emrakul likely won't be coming down early in the game