Charge the Keep

Creatures you control get +3/+3 as long as your opponents control a non-basic land or wall. Red creatures you control gain haste and
White creatures gain first strike.
"Men, the hour of glory is near.
To those who wish to flee and live, feel free.
To those who are brave enough die, join me, and
take your place amongst legends! What say you?!"
*No one leaves.*
"May the heavens guide us, CHARGE!"