Dan, the One Who Rampages

You must pay at least {r}{r}{r}{r}{g}{g}{g}{g} on this card and you may only green and red mana to pay
X.
Trample
This creature enters with X-8 +1/+1 counters.
When this creature attacks, other attacking creatures get +3/+1 until end of turn.
{r/g}: Target creature gets +1/+0. Then it gains trample until end of turn if it has 5+ power.
{r}{r}{r/g}{g}{g}: Put a 5/5 beast with trample
onto the battlefield.