Hata and Tilaok, Voyagers

When Hata and Tilaok enter the battlefield, all creatures you control explore.
Landfall -- You may give target opponent control of target creature you control until the end of that players next turn. If you do, place an exploration counter on target land that opponent controls.
Whenever a land with an exploration counter on it is tapped for mana, add that type and amount of mana to your mana pool, then put a +1/+1 counter on Hata an Tilaok.
"Let us travel just a bit further, who knows what we