Ring of Dragons

Equip {3}
Equipped creature is a Half-dragon in addition to
it's other types
Whenever a Dragon dies, you may return it to
the battlefield tapped under your control
Whenever a Half-dragon dies, you may make a
2/2 Dragon token creature with Flying and is the
color of your choice
Dragons you control have +4/+4
Half-dragons you control have +2/+2 and Flying