The Dragonborn

Level up {2} ({2}: Put a level counter on this.
Level up only as a sorcery) [4/4]
Level 1-2: {b/r}, {t}: Deal 3 damage to any
target [6/6]
Level 3-4: {w/u}{w/u}, {t}: Return up to one target creature to its owners hand [8/8]
Level 5: {r/g}{r/g}{r/g}: Create a 4/4 Red Green Dragon creature token with flying and haste [10/10]