It also helps that this is an Azorius precon, meaning it only uses white and blue mana, keeping things simple for new players, but the volume of colorless cards also means you should never be short of cards to play, so long as you have mana on the board
And keep in mind that, while the new system is designed to focus on the cardinal formats, your metrics are indifferent to everything else
Tapping creatures down then bouncing them is the ultimate tempo play, wasting tons of time and mana for your opponents
This deck is massively strong and can quickly bury your opponent in value
Which fits more with what a 'Beast' would be in my head -- the Beasts of Bogardan here aren't quite dogs, aren't quite goats
We already have a couple of enchantment decks built around cards like Hallowed Haunting that could easily run Invasion of Theros to tutor Heliod, the Radiant Dawn and Ossification and then flip into Ephara, which seems like a tough card to beat outside of a Farewell or Sunfall