Thought-Growth Engine

{g}{u}, {t}: Draw a card, then put two +1/+1
counters on up to one target creature you control.
Each opponent puts a +1/+1 counter on up to
one creature they control, then they may draw a
card. If they do, they discard a card.
Green creatures with +1/+1 counters on them
have flying.
Blue creatures with +1/+1 counters on them
have trample.