Discard 1 Monster Card from your hand to the Graveyard. Select 1 monster on your side of the field with a lower Level than the discarded monster. The selected monster can attack twice this turn.
SR Cards [Jan 17 - 28, 2018]
The Guardian of Felgrand [SR] & Spiritual Earth Art [SR]
Guardian of Felgrand LIGHT Warrior ★4 ATK 500 / DEF 500 Mokuba Kaiba [SR]If this card is Normal or Special Summoned: You can equip 1 Level 7 or 8 Dragon-Type monster from your hand or Graveyard to this card. This card gains ATK and DEF equal to half the ATK and DEF of the monster equipped to it by this effect. You can Tribute 1 monster and this card, then target 1 Level 7 or 8 Dragon-Type monster in your Graveyard; Special Summon it.
I always pick the card if I have less than 3 copies of it. I'd rather have the option to use it open to me down the line than not. Gems aren't exactly in drastically low supply, and worse case scenario, you just need to wait on more.
SR Jewels aren't that hard to come by. The point-based events (like Marik's) vomit them (and excess SR's you can convert TO SR Jewels) out by the truckload. (And they're not especially rare from LD's in general.)