First, whenever a creature you control dies, each opponent has to exile a creature of their own--this reminds me of a card like Grave Pact, only better because the casting cost is two Black versus three Black and exiling is better than sacrificing
The enchanted cards use a unique holofoil treatment too
Casting Epiphany after a Geyser can swing the game massively in your favor
A discounted extra turn spellthat is, one that costs less than 5 manaalways does work

Bounty of the Hunt Brackwater Elemental Brago, King Eternal Brain Gorgers Brain Maggot Brainstealer Dragon Bramble Wurm Brazen Cannonade Bre of Clan Stoutarm Breaching Dragonstorm Break Down Break Down the Door Break Expectations Break Ties Breeches, Brazen Plunderer Breeches, Eager Pillager Brenard, Ginger Sculptor Breya's Apprentice Briarblade Adept Bridge from Below Brightcap Badger Brightcap Badger Brilliant Ultimatum Brimstone Roundup Brinebound Gift Bring to Light Bring to Trial Brittle Blast Brittle Effigy Broken Concentration Brokers' Safeguard Bronze Tablet Bronzebeak Foragers Broodbirth Viper Broodguard Elite Browse Bruse Tarl, Roving Rancher Brutal Cathar Brutal Expulsion Bulk Up Bump in the Night Buried Treasure Buried in the Garden Burn Away Burn from Within Burn the Accursed Burning Curiosity Burning Oil Burning Wish Bushy Bodyguard Buy Your Silence Bygone Colossus Bygone Marvels Bsium Strip C.A.M.P

I poke fun at the hobby we all share to point out that these items we all enjoy are a couple of steps above paper, and paper is fragile