Taijo of the Greatsword

Creatures you control have Accumulate (Whenever
that creature attacks, put an Accumulation counter on
it. A creature may only have one instance of
Accumulate.)
At the beginning of combat on your turn, white creatures you control gain vigilance and get +0/+1
until end of turn for each Accumulation counter
on them, and red creatures you control gain first
strike and get +1/+0 until end of turn for each Accumulation counter on them.