Teferi's Isle [Mirage] Commander 2013 Oketra the True can't attack

Oketra the True can't attack or block unless you control at least three other creatures

Whenever a Dragon you control attacks

sacrifice Standstill

you may put a Goblin creature card from your hand onto the battlefield

Enchanted creature gets +X/+Y

Teferi's Isle [Mirage] Commander 2013 Oketra the True can't attackSet: Mirage Type: Legendary Land Rarity: Rare Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.) Teferi's Isle enters the battlefield tapped. {T}: Add {U}{U}. The three wizards knew only that this isle held a great mysteryand that patience alone would solve it.