When an opponent's monster declares an attack while this card is in your Graveyard and you have no cards in your hand or field: You can Special Summon this card.
Many of my favorite card backs follow this design, and thats because it works creating a memorable symbol, unifying the design, and adding a splash of color
Also, Im also running 3 copies of Dragunity Guisarme (YGOrg Translation) , a Level 3 tuner that can be used to recover your Armed Dragon LV3 when Normal Summoned
(It enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.)
A three-mana 1/1 with prowess and trample would've felt like a direct challenge to my Johnniness, but with her making Monks that also have prowess, this is almost too easy to even bother with
A counter deck cant deal with your deck when you do nothing because of how reactive the deck is