They enter the battlefield tapped and do not have basic land types, so they arent fetchable with standard fetch lands
The reason why we collect cards is because of their collection value
10: Vihaan, Goldwaker Vihaan is a great choice for any combat-focused Outlaws deck, granting Vigilance and Haste to Outlaws, allowing them to be active as soon as they hit the field, playing a part in aggressive Mardu strategies while still being available as blockers
Many Assassins have various keyword abilities such as menace, which makes them not only harder to block, but more likely to take out your opponents, especially if their life total hits 10 for Ezio Auditore da Firenze to make them lose the game with its triggered ability
If it leaves your hand before then, it won't enter the battlefield at all
It is therefore desirable that each proxy is labeled with the name of the card it substitutes, and its basic game-relevant characteristics, and erase all decorations and printed information that may be misleading