Restless Mine

when this card enters the battlefield, spawn 5 1/1
humans. all creatures you control have enslave
(any creature that is killed by a creature that has
enslave becomes a 1/1 version of that creature
[ex. a 5/5 elf becomes a 1/1 elf if enslaved])
{t}: add X mana of any color mana to your mana
pool, where X is equal to the amount of 1/1
creatures you control.