Interdimensional Dragon, History-vision Dragon D-PS01/042 RR

[G guardian]-Opponent Turn's Guard Step-COST [Discard a card with [Heal] from your hand], and call this card to your (GC) from face down. [AUTO]:When this unit is put on (GC), COST [discard one or more cards with the sum of their grades being 3 or greater from your hand], and this unit gets [Shield]+20000 until end of that battle. If you discarded cards with the sum of their grades being 6 or greater for this cost, COST [Counter Blast (1)], choose one of your units, and it cannot be hit until end of battle.