(1) If this is the only card in your hand: You can Special Summon it.
(2) If this card is Special Summoned by its 1st effect: Its ATK becomes 2500 until the end of your opponent’s turn.
(3) If this card battles an opponent’s monster, you take any battle damage they would have taken, instead
(4) If you take damage from a battle involving this card: Change its ATK to 0, then, if you have 2000 LP or less, its ATK becomes 5000.