Most alt-win conditions in Magic have a timing restriction where you need to wait until your next upkeep to win the game, which entering the battlefield tapped more or less did for Maze's End
You still need to actually cast the spell, which follows normal timing restrictions
Its ability is identical to Grandopolis, however, its got a slightly higher attack power, but a thousand fewer defense points
Irregularities can be detected, particularly in the set symbol and in lines that arent straight (see Print Quality and Straight Lines)
The token copies exactly what was printed on the original creature and nothing else (unless that creature is copying something else or is a token
Malakir Rebirth gives you some spot removal protection, though it also works well alongside your spells that sacrifice creatures to draw cards