Kalemne, Disciple of Iroas
{2}{R}{W}
Legendary Creature -- Giant Soldier
3/3
Double strike, vigilance
Whenever you cast a creature spell with mana value 5 or greater, you get an experience counter.
~this~ gets +1/+1 for each experience counter you have.
Kelsien, the Plague
{R}{W}{B}
Legendary Creature -- Human Assassin
2/2
Vigilance, haste
~this~ gets +1/+1 for each experience counter you have.
{T}: ~this~ deals 1 damage to target creature you don't control. When that creature dies this turn, you get an experience counter.