In spellslinger-heavy builds, think Izzet or Jeskai Control, effectively doubling your mana output for removal and draw spells while threatening massive bombs like Jeskai Revelation is genuinely terrifying for opponents
Scavenging Ooze The Ooze wreaked havoc many years ago in Standard, and it now returns with a vengeance
You're going to want a mix of cheap equipment to put into play early and discount your commander, and expensive haymakers like Kaldra Compleat and Dragon Throne of Tarkir to free-cast off of Nahiri's attack trigger
In a similar vein, some local game stores will hold prerelease events for new Magic: The Gathering sets
Who is organizing Bloomington Pokmon Card Expo
For example, ditching something like Solemn Simulacrum, Circuit Mender, or Myr Retriever can all be great value on top of getting to tutor for a spell and cast it for free