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Cannot be targeted or destroyed by your opponent's card effects

A Tamer card with a [Security] effect in its lower text isn't a "Tamer card with inherited effects." BT17-010 C Digimon Lv.4 Growlmon Color Red Cost 5 DP 5000 Digivolve Cost 1 Red 2 from Lv.3 Form Champion Attribute Virus Type Dark Dragon Card Text 1 [Effect] [When Digivolving] Delete 1 of your opponent's Digimon with 4000 DP or less

This means even beginners will likely know what many of the cards do already

"Imperial Iron Wall" can lock the Graveyard from the effect of the Ritual Spell Cards and the effects of "Valkyrus", "Trishula" and "Decisive Armor"

As such, any card that can disrupt a creatures special ability is often considered among the most powerful in the game