Island Fish Jasconius [Arabian Nights] Commander 2018 that opponent discards a card

that opponent discards a card

Set: Sun & Moon: Guardians Rising Type: Basic Lightning Energy Rarity: Secret Rare

Set: Doctor Who Type: Legendary Creature — Time Lord Doctor Rarity: Rare Cost: {3}{W}{U} Whenever The Seventh Doctor attacks

Its owner puts it on the top or bottom of their library

Set: Diamond & Pearl: Majestic Dawn Type: Psychic Rarity: Rare Retreat cost: Colorless

Island Fish Jasconius [Arabian Nights] Commander 2018 that opponent discards a cardSet: Arabian Nights Type: Creature Fish Rarity: Rare Cost: {4}{U}{U}{U} Island Fish Jasconius doesn't untap during your untap step. At the beginning of your upkeep, you may pay {U}{U}{U}. If you do, untap Island Fish Jasconius. Island Fish Jasconius can't attack unless defending player controls an Island. When you control no Islands, sacrifice Island Fish Jasconius.