Boros Blademaster

Triple strike(This creature deals Damage, and then first strike damage, and then regular combat damage.)
Advanced Mentor(When this creature attacks put a +1/+1 counter on target attacking creature with Higher power)
At the beginning of combat on your turn you may choose wether multiple creatures can block Boros Blademaster or not.
Creatures with power or toughness lower than 3 can not block Boros Blademaster.
{3}{r/w}{r/w}:put a +1/+1 counter on Boros Blademaster, activate this ability only if Boros