Your cantrips and creatures arent individually powerful cards as theyre bolstered by the fact that Feather lets you keep reusing your spells to get those heroic triggers
The Crown Jewel Lets start with the big one, the card that has everyone talking and frantically cracking Collector Boosters
If Hallowed Moonlight is a decent sideboard card in Modern, why not this
8 special treatment cards, 10 foils per pack, 15 Magic cards, 1 foil token in each booster, Only MID boosters with Extended-Art cards

Ayara's Oathsworn Beseech the Mirror Beseech the Queen Bogbrew Witch Brainspoil Bringer of the Black Dawn Case of the Stashed Skeleton Coveted Prize Cruel Tutor Cynical Loner Dark Petition Demon's Herald Demonic Bargain Demonic Collusion Demonic Tutor Diabolic Intent Diabolic Intent Diabolic Tutor Dimir House Guard Dimir Machinations Emeritus of Woe Entomb Gravebreaker Lamia Grim Servant Grim Tutor Hoarding Broodlord Hour of Victory Illicit Shipment Imperial Seal Increasing Ambition Infernal Tutor Insatiable Avarice Liliana Vess Lively Dirge Mastermind's Acquisition Netherborn Phalanx Oriq Loremage Profane Tutor Razaketh's Rite Razaketh, the Foulblooded Rhystic Tutor Rune-Scarred Demon Servant of the Stinger Shred Memory Sidisi, Undead Vizier Smuggler Captain Splinter's Technique The Creation of Avacyn The Cruelty of Gix Urborg Panther Vampiric Tutor Vile Entomber Whisper Squad Wishclaw Talisman Witty Demon (playtest)

But any deck capable of getting five basic land types with ease can do worse than Tribal Flamess 5 damage to any target for just 2 mana