Draft the Invasion block. 2 packs of cards featuring Invasion and Planeshift cards, followed by 1 pack of Apocalypse Cards.
Color Strategy and Pack Setup
The Invasion block was a block focused on multi-color support, with Shards and Wedges being heavily encouraged. The big catch is how the color pairs get introduced. The first two packs will have only Shard and allied color support, and the final pack will only have support for Wedge and enemy color support. This leads you to either going allied color or Shard in the first pack, then taking up a wedge or finding the enemy support for your shard in the last pack. Flexibility is key to getting value from this structure.
This is still older magic so most color pairs lack any major identity and the set has global mechanics that every color interacts with. This is instead of unique play styles for each important color pair. I'll go over the global mechanics later, but the most important thing to understand is that multi-color here just means something very basic compared to more modern sets.
Each Shard and Wedge will have a 'sign-post' wizard at common that grants you access to effects that it's ally colors or enemy colors could do. These cards will clearly showcase the block's mentality on color combinations. Keep an eye on the commons in general as they are of similar quality to the uncommons. Five color is also viable thanks to all the fixing present in the set.
What is Vanilla?
As this is an older format card quality is much weaker than what we are used to. A 2/2 for 3 is considered normal, with 2/1's and 1/2's usually costing 2 mana. This format is also very weak in terms of general power and toughness, with the majority (~65%) having 1 or 2 power, and the majority (~65%) having 1 or 2 toughness.
Set Mechanics
Color Checking: This block features many cards that check the color of their targets or watch for spells of a certain color to be played. This takes the form of things like protection, only allowing the targeting of certain colors, or gaining bonuses when blocking certain colored creatures.