Eternal Conficlt

When Eternal Conflict enters the battlefield, tap
all Legendary creatures.Whenever a legendary creature enters the battlefield, tap it. Legendary creatures don't untap at the beginning of its controllers untap step. At the beginning of each players upkeep, that player may have target
Legendary creature fight another target Legen-
-dary creature. When there is only one Legendary
creature on the battlefield, exile Eternal Conflict,
that creature gains protection from black, blue,
green, red and white.