acrylic case for one piece booster box Display 01-03 (white bottom) – Gemloader Please read carefully One Piece Booster Box Acrylic

If Steel-Song has taught us anything, playing cards for free is very powerful

Being able to exile it then put it back on the battlefield allows you to exile other cards from your hand or graveyard and increase the number of abilities you stack up

Whenever the player that controls it casts an Instant or Sorcery spell, it gets +1/+1 until the end of turn

In Katara, Water Tribe's Hope, we see that by using Waterbending Katara can "allow for creatures you control to have a base power and toughness X/X until end of turn." With a strong amount of mana on your bench this could allow you to take normally weak creatures and buff them to deal big damage all at once

Five mana for a 2/2 flyer

It also gives access to blue cards which can be great for more defensive measures