有是有的，不过武器不会跟着变大，我记得有这两个：（注意后者不变体型，只变触及）
Giant’s Might Swordmage Utility 22 （FRPG）
Soaking up ambient arcane power, your body swells and grows.
You stand as tall as a giant and are blessed with awesome power.
Daily ✦ Arcane
Minor Action Personal
Effect: Your size category becomes the next larger one, such
as from Medium to Large. You gain a +5 power bonus to
Strength ability checks, a +2 power bonus to melee attack
rolls, and a +5 power bonus to melee damage rolls.
If this power increases your size to Large, Huge, or
Colossal, your space increases to match the new size and
your reach also increases by 1. If there is insufficient room
for your space to increase, this power automatically fails.
This transformation persists until the end of the encounter
or until you choose to end it as a minor action.
Righteous Might Cler i c At tac k 2 5 （DP）
Divine power wells up within you. andyou seem to tower over
your god's enemies.
D a i l y • Divine, W e a p o n
Standard A c t i o n Melee weapon
Effect: Until the end of the encounter, your reach increases
by 1, your melee attacks deal 1d6 extra damage, and you
gain a +1 power bonus to speed and a +2 power bonus
to AC. Then make the following attack.
Target: O n e creature
A t t a c k : Strength vs. AC
Hit: 4 | W | + Strength modifier damage.
另外，如果只要求加触及的话，有无数招。用骑马配合加触及的招，当大体型也差不多了
