Mikaela, the Focused Storm

Prowess
{1}{w}: Until end of turn, Mikaela gets +1/+0 and
gains "Prevent all damage that would be dealt to
this creature." At the beginning of the end step,
she gets -0/-1 until end of turn.
{1}{u}: Counter target spell or ability that
targets you or a card or token you own unless
its controller pays {2}.