Tars Tarkas

While Tars Tarkas is on the battlefield all
other green martians get +2/+1
Tars Tarkas gets +1/+1 when attacking with green martians or John Carter.
"'That Tardos Mors,' he said earnestly, ' may
meet the greatest living warrior of Barsoom, but
that he may lay his hand on the shoulder of a friend and an ally is a far greater boon.'"