You can send 1 face-up Continuous Spell Card you control to the Graveyard, then target 1 monster your opponent controls; destroy that target.
How to Get
45000 Gold SR Jewel x 7 Stone of Dark x 55
Can destroy opponent's monsters.
Can be used to unclog your spell/trap zone.
Effect is not once per turn.
Requires you to send to grave a face-up continuous spell to activate effect.
When destroyed in your monster card zone, Crystal Beast monsters become continuous spells. This works to fuel Gravi-Crush Dragon's effect while also helping to unclog your spell/trap zone so you can use other spell/trap cards or fill it with more Crystal Beast monsters. Crytal Beast Sapphire Pegasus is great because he can search your deck for a Crytal Beast monster and add it to your spell/trap zone giving instant fuel for Gravi-Crush Dragon's effect.
After using up all your continuous spell Crystal Beast monsters, you can replenish them with Crystal Blessing by returning 2 Crystal Beast monsters to your spell/trap zone. And since Gravi-Dragon's effect can be used more than once per turn, as long as you control continuous spell cards for cost, you can destroy up to 5 monsters your opponent controls in one turn.
This card targets monster while Magna-Slash targets S/T cards.
You can play without S/T cards, stalling with high ATK and monster effects, but without any monster on the field you're as good as dead since your opponent can attack directly, and you'll receive the full ATK of opponent's monsters as damage.
I guess that's why this card is SR.
Yeah running a CB deck as fodder/ammunition for gravi-crush dragon, magna slash dragon, parallel twister and double cyclone wow at least CB are good for something I guess