If the ability of Tree of Redemption makes your life total greater than before, this effect loses to the prohibiting effect of Leyline of Punishment and cant be applied
In a day when the only thing stopping players from seriously considering Mana Flare was that they were too busy saving up to buy their last Mox and they had enough respect for their red creatures to make sure most of them were tough enough to survive a Lava Dart, even if they didn't even know how good Lightning Bolt was let alone that they'd be pricking dogs with darts
Some other good options for rune decks might be Calix, Guided by Fate, Zur the Enchanter, and Nylea's Colossus
Summon a Level (Rank) 8 or higher Dragon-Type monster 2 time(s) in one Duel against Quattro using Kite Tenjo
THASSA, DEEP-DWELLING Blue is pretty good at stealing stuff
A good but slightly too situational removal spell, for unpowered cubes at least