It's an activated, repeatable tutor effect that can't be used easily in a lot of shells as it needs either enough enchantments, or enough instants, to make it work
Best Prevent All Damage Payoffs A primary use of these cards, specifically the non-Fog varieties that prevent noncombat damage, is protecting your board from a variety of board wipes
Card Set(s) -The Seven Warlords of the Sea-[ST-03] CARD VIEW ST03-011 | C | CHARACTER Buggy Attribute Slash Block icon 1 Type The Seven Warlords of the Sea/Buggy's Delivery Card Set(s) -The Seven Warlords of the Sea-[ST-03] CARD VIEW ST03-012 | C | CHARACTER Pacifista Attribute Special Block icon 1 Type Biological Weapon/Navy Card Set(s) -The Seven Warlords of the Sea-[ST-03] CARD VIEW ST03-013 | C | CHARACTER Boa Hancock Attribute Special Block icon 1 Type The Seven Warlords of the Sea/Kuja Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Trigger [Trigger] Play this card
Tyvar the Bellicose Elves are a classic archetype in Magic
Amber/Emerald Starter Deck Strategy Play out lots of Toy characters, use their effects to help each other out, and gain control of the board
Emerald can also be aggro itself, especially with the popular Legendary card, Beast: Relentless, which readies every time an enemy character is damaged
