Ryder of the wind

Flying
When Ryder of the winds enters the battlefield
for every 2 {x} you can summon a 1/1 elf token.
{t} Add a {g} for every 2 {x}.
If you spent 10 {x} you can search your library for
5 "Elf" cards, and cards that tap
for {g} get to tap for an additional {g} permanently.