[When Digivolving] If you don't have a [Trial of the Four Great Dragons] in play, you may place 1 [Trial of the Four Great Dragons] from your hand in your battle area. [Opponent's Turn] While you have a Digimon with [Four Great Dragons] in its traits in play, or [Trial of the Four Great Dragons] is in your battle area, this Digimon gains <Blocker> (When an opponent's Digimon attacks, you may suspend this Digimon to force the opponent to attack it instead).