Horn of Gondor seems like a better fit
Landfall Whenever a land you control enters, you may untap this creature
I think it should add some value, maybe 10%-15% Gem Mint has one at 13:33 3 Likes somepokemonguy February 19, 2020, 2:14am 8 I like that theory about the back stamp corresponding to grey stamps lol but most of the grey stamps Ive seen are pretty uniform and I think if they were a result of the sheets touching while stacked then the grey stamps would be a bit more blotchy
Having multiple cards with this effect helps them stack, draining your opponents for tons of life with each creatures sacrifice
You can use this ability each turn once Oswald is in play, and when combined with Sail The Azurite Sea , you can use it twice
A fun little sidequest of a Commander, but not quite best in class