Simic Aggro deck based around explosive evolve growth:
T1 Cloudfin Raptor
T2 Young Wolf
into Rapid Hybridization
leaves a 3/4 flyer, a 2/2 and a 3/3.
My favourite aspect is the decks ability to adapt unlike most other aggro decks, Zameck Guildmage
keeps undying creatures alive while generating card advantage, which also allows ETB triggers for evolving creatures.
As the game progresses, Master Biomancer
will give some staying power and can overpower midrange decks while Elusive Krasis
can push through damage on a stalled board.