Behemoth of the Sea and Sky

Flying, Deathtouch
{1}: Add one mana of any color to your mana pool.
{w}{u}{b}{g}{t}: Gain X life and put half of X
rounded up +1/+1 counters on target creature
you control where X is the amount of mana spent
to cast spells this turn. If X is 10 or greater, draw
five cards and each of your opponents loses 10 life.