A card that says "Wizards of the Coast" at the bottom of the card is from 1999 or early 2000 it is worth investigating closely for sure
It's a classic pick one of three that offers some +1/+1 counters, enchantment/artifact exiling, and a tutor for any land
OCG 2017.01 OCG 2017.04 Limit Regulation changes: Master Peace, the True Dracoslaying King 3 1 Dragonic Diagram 3 1 Card of Demise 3 2 Terraforming 3 2 Multiple hits to reduce True Draco consistency, but Master Peace, the True Dracoslaying King would still be the most powerful monster going in the OCG 2017.07 metagame
on summon Sigrun can special summon another Valkyrie from your hand or Graveyard
Granted, a coin flip is still a coin flip, but with the capability of reducing that randomness inherent in all coin flip attacks, I can definitely see what the card creators were up to
Twinflame Tyrant isn't as flashy, but doubling all damage to your opponent and their permanents makes for quite the scary card