The smart approach is to research recent sales and population reports before submitting a card
In the case of signed cards, a signed card can only ever achieve the grade of Good, even if without the signature the card would be classed as near mint - a signature or some sort of marking instantly reduces a cards grade to Good
What cards do you swear by
Now before anyone asks, his duel against Devack during the dark singer arc episodes 47 to 51 (where he was originally meant to get Life-stream dragon and become the fifth signer) doesn't count cause he was losing and Luna took over after she returned from the duel monster spirit realm, and if you're wondering why Leo did not become a signer then, blame the fanbases love for the at the time popular Blackwing archetype Crow uses
Since Voltaic Key plays nicely with some of the proliferate cards, I added Trinket Mage to go get it and also tossed in a package of utility one-drops as well
Let me know what you think :) [spoiler=cards] Tree of Harmony Activate only if you control 1 'Princess Twilight'
