8 Gold Star Espeon
Not only will you be able to double all of these adventure effects, but on top of this, a number of cards in the deck have powerful abilities that trigger when you cast instants or sorceries such as Leonin Lightscribe (buff your team), Talrand (creature tokens), Edgewall Innkeeper (card draw), Karok Wrangler (+1/+1 tokens), Quadrix Apprentice (card draw), etc
So, it's more than usual, if not straight-up incentivized, to play non-optimal builds
The Heart of Magic can be played without a grand strategy in mind
Creatures (22) 2 Hostage Taker 2 Lyra Dawnbringer 3 Thief of Sanity 4 Deputy of Detention 3 Seraph of the Scales 4 Basilica Bell-Haunt 4 Hero of Precinct One Planeswalkers (2) Lands (24) Spells (12) Historically, the Pro Tour (now Mythic Championship) has set off this last step, but last season it came a little later and merely showcased how much the community had already figured out about the format