The copy created by Sword of Wealth and Power's delayed triggered ability will have the same targets as the spell it's copying unless you choose new ones
In more recent years, color hosers are fewer, weaker, and more situational, and part of that is that some of these older cards simply make it so that one person cant play Magic at all, which isnt exactly fun, as pointed out by Patrick Sullivan
Since colorless mana is generally going to be easy to generate a fair amount of, you could get this hitting as early as turn 4 quite likely and then use it to develop a game plan
Both sides of the discussion have valid arguments
That might just mean "getting 'em dead" synergizes with getting 'em dead even faster, but it still counts
The controller wants to defeat the Siege, because once the Siege's last defense counter is removed, it is exiled, and its controller gets to play its reverse face for free