It's still hard to find booster sets at MSRP, but you should also consider the best single cards to buy now that the expansion is out
Mana Vault is a one mana artifact that can be tapped to add three generic mana to your mana pool, netting you two mana
10 Donphan Is Always A Great Option A Reliable Pokmon With Consistent Damage Donphan is a stage one Fighting-type card in which can create some considerable damage output to overwhelm your opponent
The best part of Pip-Boy 3000 is the fact that it triggers on attack and not on combat damage dealt, meaning you can start banking value early with three great options to curve out any issues you may be facing when building your board state
(3/14/2017) If you somehow manage to cast Explore when it's not your turn, you'll draw a card when it resolves, but you won't be able to play a land that turn.
(As an aside - Appetite for Brains is probably my vote for the most overtly scary or graphic piece of MTG card art, but well explore other examples in more detail later)
