Dragon

Dragon Roost

{5}{R}{R}: Create a 5/5 red Dragon creature token with flying. (It can't be blocked except by creatures with flying or reach.)

{1}{R}: Target creature can't block this creature this turn.

Flying
When this creature enters, you gain 3 life.

Each creature you control can block an additional creature each combat.

Enchant creature
{R}: Enchanted creature gets +1/+0 until end of turn.

Target creature gets +4/+0 until end of turn.

{7}{R}: This creature deals 5 damage to target player or planeswalker.

All creatures get +X/-X until end of turn.

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Flying
{R}: This creature gets +1/+0 until end of turn.

Whenever this creature blocks or becomes blocked, it gets -1/-1 until end of turn.

Other Goblins get +1/+1 and have mountainwalk.