Cool but Rude [TMT - 89] Planeshift Whenever Katara attacks

Whenever Katara attacks

if you have exactly thirteen cards in your hand

each opponent loses 4 life unless that player sacrifices a nonland permanent or discards a card

then shuffle your library

Cool but Rude [TMT - 89] Planeshift Whenever Katara attacksRarity: R #: 89 Creature Type or Sub Type: Enchantment Class Rules Text Contains: (Gain the next level as a sorcery to add its ability.) Whenever you attack, you may discard a card. If you do, draw a card. 1R: Level 2 Whenever you discard a card, this Class deals 2 damage to each opponent. 1R: Level 3 When this Class becomes level 3, search your library for a card, put it into your hand, shuffle, then discard a card at random.