jokes aside, i think u'll have to brainstorm a lot to come up with something that's not kinda pun-ish
given that it's the bottom, maybe just engrave a message that doesn't force itself to relate to mtg - you can stylize it as the flavor text of a card, though, in italics, with the proper font and as if it were a quotation from some legendary character (you, in that case)
But then the sixth year goes to wastes
jokes aside, i think u'll have to brainstorm a lot to come up with something that's not kinda pun-ish
given that it's the bottom, maybe just engrave a message that doesn't force itself to relate to mtg - you can stylize it as the flavor text of a card, though, in italics, with the proper font and as if it were a quotation from some legendary character (you, in that case)