(Gain the next level as a sorcery to add its ability.)
Spells your opponents cast during your turn cost
more to cast.
:
Level 2
Creatures you control get +1/+1.
:
Level 3
Whenever you attack, until end of turn, target attacking creature gets +1/+1 for each other attacking creature and gains double strike (This creature deals both first-strike and regular combat damage.).