Curt, Thoughtful Storyteller

When a non-land permanent enters the battlefield, its controller may pay {3}. If they do,
that player draws a card.
{1}{u}{u}{r/g}: Target creature gets +X/+0 until end
of turn if you spend {r}, or +0/+X until end of
turn if you spent {g}, where X equals the number
of permanents on its controllers battlefield. The creature is goaded until its controllers next
endstep.