River of Tears replaced with
Soured Springs. This is more or less a straight blue/black land swap, but the one I'm cutting is conditional with which color I can use, while the one I'm replacing it with lets me choose either AND it deals one damage to any opponent, which if I'm lucky will work out with Davros's main ability if I've already done 2 damage to any other opponent in a given turn. Maybe this may not come up super often, but I figure I lose nothing with this swap.
Death in Heaven replaced with
Fake Your Own Death. Death in Heaven might look neat on paper but I think it would work better with Missy as a Commander. Meanwhile Fake Your Own Death can be some good later-game defense for Davros if I have an engine going and someone tries to take him out.
Blasphemous Act replaced with
Prisoner's Dilemma. As a board wipe Blasphemous Act isn't bad, but since I want lots of Daleks on the board if I'm in a position where it's preferable to wipe everything I've probably already lost. Better to lean into Davros's villainous theming and use a card that guarantees at least 4 damage to each opponent, triggering Davros's ability.
Blink replaced with
Rite of the Raging Storm. Blink is a great episode, but much like Death in Heaven the effects of this saga aren't as beneficial to Davros. Instead I'll just give all my opponents 5/1s that can't attack me. Their Lightning Ragers may not trigger Davros's ability since it only counts my turn, but nothing wrong with whittling everyone else down.
Day of the Moon replaced with
Demonic Ruckus. I almost kept this one, and may yet change my mind. Demonic Ruckus may not have a super strong effect, especially since many of my Daleks will have menace anyway but getting to buff an already strong creature with Trample is really tempting.
Solemn Simulacrum replaced with
Disrupt Decorum. Wasn't sure if I wanted to replace one of my creatures with a sorcery, especially since the creature has card draw on death. But, Disrupt Decorum looks like a great panic card.
Rassilon, the War President replaced with
Frontier Warmonger. I just straight up don't care for Rassilon's effect. If I had the choice of losing 2 life each turn I'd probably still use him, but otherwise I'd rather have a stronger and cheaper attacker that also gives everything menace that attacks my opponents, including other opponents creatures.
Ashad, the Lone Cyberman replaced with
Brash Taunter. I'm not really building this deck to sac creatures so one of Ashad's effects will rarely come up. Meanwhile, if I have Brash Taunter out then all I gotta do is spend 2 and a red to throw it at a creature of power 3 or more and that 3 damage is reflected to an opponent and Davros's ability triggers.