First, every Secret Lair drop has technically been "worth it," in the sense that the retail price of the cards you get in the drop is equal to or greater than the cost of the drop
Singleton deck building As explained above, you can only have one of each card type in your deck, except for basic lands
This should be enough to knock out any opposing threats across the table
Land - Swamp Forest Color tag templates(None) Reliquary Tower You have no maximum hand size
I saw a tweet the other day where someone posted an image of their energy deck, but only showing the non MH3 cards
Guilds of Ravnica Niv Mizzet, Parun , Emmara, Soul of the Accord , Lazav, the Multifarious (decklist in the comments) , Tajic, Legions Edge , Etrata, the Silencer Commander 2018 Aminatou, the Fateshifter , Xantcha, Sleeper Agent , Lord Windgrace Core Set 2019 Sai, Master Thopterist , Goreclaw, Terror of Qal Sisma , Vaevictis Asmadi, the Dire , Chromium, the Mutable Battlebond Dominaria Teshar, Ancestors Apostle , Grand Warlord Radha , Arvad the Cursed, Muldrotha, the Grave Tide , Slimefoot, the Stowaway , Yargle, Glutton of Urborg , Squee, the Immortal , Firesong and Sunspeaker , Jodah, Archmage Eternal Masters 25 Rivals of Ixalan Azor, the Lawbringer , Etali, Primal Storm , Nezahal, Primal Tide , Zacama, Primal Calamity , Tetzimoc, Primal Death , Zetalpa, Primal Dawn , Ghalta, Primal Hunger Unstable Grusilda, Monster Masher , Dr