It wont break any format, but the price and the benefits are quite nice for white builds
Many players ran Roxanne in their deck thanks to her strong ability to shuffle both players' hands back into their decks, making your opponent draw two, while you get to draw six as long as they have three or fewer Prize Cards remaining
This attribute implies that resources will have been used, so Dowsing Machine as a basic rule is best used mid to late-game
10 Marshland Bloodcaster Turn Your Life Into Mana Sometimes the best way to ramp up in Magic is by expending another resource, like your life total
Its a tough addition to a trainers deck that rewards careful timing and matchup knowledge, especially against Stage 2-heavy builds or archetypes that rely on multi-turn setups
And one of the good things about this is that it saves you from major combat problems, but that one blocker that'd kill an attacker will do so, and yet won't damage back