Signing a card does decrease its condition because it has been, well, written on
If you have a decent board-state, Ajani can really give you an advantage, but he doesn't add anything to the board on his own, and takes some time to give you that advantage
Rarity: R Cost: RR Pow/Tgh: 1/1 Card Type: Creature - Goblin Warrior Artist: Andrea Piparo Name: Moria Marauder Finish: Regular Card Number: 0138 Set Name: The Lord of the Rings: Tales of Middle-earth Related Products Samwise the Stouthearted - Foil - Showcase The Lord of the Rings: Tales of Middle-earth NM-Mint, English 4 In Stock NM-Mint, English 4 In Stock NM-Mint, English 4 In Stock Gollum, Patient Plotter The Lord of the Rings: Tales of Middle-earth NM-Mint, English 3 In Stock NM-Mint, English 3 In Stock NM-Mint, English 3 In Stock Shelob's Ambush The Lord of the Rings: Tales of Middle-earth NM-Mint, English 3 In Stock NM-Mint, English 3 In Stock NM-Mint, English 3 In Stock Now for Wrath, Now for Ruin
But the one green cost tends to price it out of most decks that usually want ritual spells, which limits its power level quite a bit