Its not enough to make a thing for one card, you need to make something that can be useful on five, ten, twenty cards, depending on the kinds of thing its meant to impact
the party escapes the dungeon and finds themselves in the city of Athkatla, confronted by Irenicus
You can cast a spell using flashback even if it was somehow put into your graveyard without having been cast
Separate especially valuable cards for individual sale, maybe in one of the best binders for Pokmon cards, for extra presentation points
Although this was a pre-release promo, the value of this card was much lower than that of the D23 expo cards
(If they're equipped to the same creature, the abilities of the equipped creature will also trigger three times.) An ability of the equipped creature that triggers when a card is put into a graveyard "from anywhere" triggers twice only if (a) a creature card was put into a graveyard from the battlefield and (b) The Masamune is still on the battlefield and attached to the creature with the relevant ability