If the copied permanent has in its mana cost, X is 0.

If the copied permanent is a token, the token that's created copies the original characteristics of that token as stated by the effect that created that token.

If the copied permanent is copying something else, then the token enters as whatever that permanent copied.

If all of Sygg's Command's targets are illegal as it tries to resolve, it will do nothing. If at least one target is still legal, it will resolve and do as much as it can.

Any enters abilities of the copied permanent will trigger when the token enters. Any "as [this permanent] enters" or "[this permanent] enters with" abilities of the copied permanent will also work.

The token created by the first mode of Sygg's Command copies exactly what was printed on the original permanent and nothing else (unless that permanent is copying something else or is a token; see below). It doesn't copy whether that permanent is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.

One or more stun counters on a permanent create a single replacement effect that stops the permanent from untapping. That effect is "If a permanent with a stun counter on it would become untapped, instead remove a stun counter from it."