Vasa

If Vasa is tapped, your opponent may pay {3},
if he does, sacrifice Vasa.
If he doesn't Vasa gets 2 experience at the beggining of your next upkeep.
Whenever Vasa blocks enemy creature, tap Vasa.
3 Fanrik: This creature gets: "Whenever Vasa dies
add {u}{u}{u} to your mana pool"
6 Lojtnant: This creature gets: "Whenever Vasa dies, look for 3 blue basic lands, and put them in
your hand"
9 Forvaltare: This creature gets Vigilance