Fifth Dawn Fortress

Fifth Dawn Fortress is all basic land types. (It can tap and add {c}, {g}, {r}, {b}, {u}, or {w}.)
When Fifth Dawn Fortress enters the battlefield, discard a nonland card. You lose life equal to it's converted mana cost. If you can't, sacrifice Fifth Dawn Fortress.
Whenever you tap Fifth Dawn Fortress, flip a coin. If you lose the flip, Fifth Dawn Fortress deals 2 damage to you.