Flyers

Fly over your opponent's defences to chip in for damage they can't stop.
Works really well in too

Blink And You'll Miss It

Control the battlefield with overwhelming value from repeated ETB triggers.
Why do something once when you can do it over and over again?

What's Yours Is Mine

Like what your opponent is playing? Why not play that too!

Sacrifice Aggro

An aggressive package with lots sacrifice payoffs.
Works well in if you wanna focus more on aggro
or to focus more on sac value.

Lands Matter

Generate value by playing more and more lands.
Works in for some lands in the graveyard shenanigans
or to pump out big creatures.

Big Bois

Utilize lots of mana dorks in order to get early big threats.
Works well in for more big bois

+1/+1 Counters

Your creatures may start out small, but they won't stay that way for long, and you'll be certain to get some
+1/+1 counter payoffs along the way

Go Wide

Amass an army of tokens to overwhelm your foe. Splash into for more token generation and sacrifice value

Reanimator

Make your best Herbert West impression and bring back some creatures from the dead!
Pairs well with to get more cards in your graveyard

Aristocrats

Give your opponent a death by a 1000 cuts by sacrificing the many tokens you create.
Pairs well with for more token generation or with for more sacrifice value

SpellSlinger

Cast many cheap spells and draw lots of cards to accrue value over time.
Pairs well with for some more aggressive cheap spells or with for some spell recursion

Graveyard Matters/Self Mill

Who needs stuff on the battlefield when you can just put it directly into the graveyard and benefit even more from it

Aggressive Beatdown

Hit 'em hard and hit 'em fast. This strategy relies on getting out lots of early threats to try and overwhelm your opponent before they have time to respond.

Midrange Burn/Lifegain

Who knew that Boros could go for a burn plan?
Cast spells that gain you life and hit your opponents in the face.
Pairs well with or for some spell shenanigans in

Copy Cats

Like the creature you're playing? What if you could play it again? And again? How about one more time?

Ramp

Ramp into big creatures ASAP.
Pairs well with for more ramp/big bois/lands-matter