The fallout is bigger than one bad transaction: Collectors and players get ripped off
The general rule is if your opponents deck contains cards such as Fatal Push or Lightning Bolt then Magus is not an effective way to attack their manabase and Blood Moon is
Spacecraft make it trivially easy to tap your creatures when you want to do so, so I cant imagine this artificer will be very hard to enable
This card can heal a couple of points of damage to any one of your characters while drawing a ton of cards for maximum value
Partner (You can have two commanders if both have partner.) Legendary Creature - Human Monk Conclave Sledge-Captain Backup 1, backup 1, backup 1 (When this creature enters, put a +1/+1 counter on target creature
Back in her own Standard format, Sun's Champion was the curve topper of many control decks, thanks to her ability to remove opposing creatures while providing a win condition through Soldier tokens