Portal Gun

{u}: Target player creates a token named "Blue Portal" with: "Whenever a nonland permanent enters the battlefield under your control, if another player controls an enchantment named "Orange Portal", they gain control of that permanent".
{r}: Target player creates a token named "Orange Portal" with: "Whenever a nonland permanent enters the battlefield under your control, if another player controls an enchantment named "Blue Portal", they gain control of that permanent".