Usually players take mulligans because they dont have enough land cards, or because they have too many lands and not enough spells

Agitator Ant Alela, Cunning Conqueror Besmirch Bhaal, Lord of Murder Bloodboil Sorcerer Bothersome Quasit Bowie Base One Catch of the Day (playtest) Coronation of Chaos Coveted Peacock Day of the Moon Death Kiss Disrupt Decorum Farid, Enterprising Salvager Fast Forward Fell Beast's Shriek Firkraag, Cunning Instigator Frenzied Gorespawn Geode Rager Glin, Dwarf Emissary Goblin Racketeer Grenzo, Havoc Raiser Havoc Eater Insufferable Balladeer Jeering Homunculus Kaima, the Fractured Calm Kang Dynasty Karazikar, the Eye Tyrant Killian, Decisive Mentor Kitt Kanto, Mayhem Diva Komainu Battle Armor Kros, Defense Contractor Laser Screwdriver Laurine, the Diversion Maestros Confluence Maeve, Insidious Singer Marisi, Breaker of the Coil Nelly Borca, Impulsive Accuser Oceanus Dragon Ood Sphere Popular Entertainer Puppet Master, String Puller Ransom Note Red Death, Shipwrecker Renegade Silent Seifer, Balamb Rival Slicer, Hired Muscle Sly Instigator Sontaran General Spectacular Showdown Take the Bait Taunt from the Rampart Taunting Kobold Taunting Sliver The Beamtown Bullies The Master, Mesmerist Undercity Vengeful Ancestor

Right off the bat you have Vigilance and Reach, and a power/toughness number that's likely to start at six and climb throughout the game
Options like Eugsph or ALLPRIMO keep your deck boxes and valuable cards safe wherever you go
2022-02-18 Although the Ninja is attacking, it was never declared as an attacking creature (for purposes of abilities that trigger whenever a creature attacks, for example)
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