Lotus Petal is a horrendously bad way to get extra mana, forcing you to give up a card just to get one mana, and not giving you any other choices if you don't need the mana
Speaking of which, wasn't there a disassembly of it being worked on at some point
#122: Duel Masters Duel Masters Duel Monsters
Artifact Nope (CTRL to add secondary) Protection Protection (CTRL to add secondary) Ramp Ramp (CTRL to add secondary) Removal Removal (CTRL to add secondary) Swamp Mana Swamp Mana (CTRL to add secondary) Value Increasing Ambition Search your library for a card and put that card into your hand
This is a fun bit meant to get you thinking and talking about what makes cards cool
I love The Reaper, King No More, because it turns a blighted creature from a foe to a friend once per turn, and can deter board wipes if you spread the -1/-1 counters around enough