Invincible War

When Invincible War enters the battlefield, create 16, 4/4 Invincible Varent Tokens with Flying, Indestructible, Haste, Vigilance and (Whenever this creature deals combat damage to a player, that player must sacrifice a land), and each opponent creates two 2/2 hero tokens with Reach and (This token can only block Invincible Varent Tokens)

At the beginning of your end step, sacrifice all creatures and Invincible War