While a fair card by cube standards in terms of power level it is a uniquely positioned card that winds up seeing more play than any of the other creatures that generate cards when they attack like the classic Ophidians and Shadowmages.Viper is a win more card like those others but Viper is substantially better when behind and actually does relevant work
The initial damage clears out smaller creatures and planeswalkers, and every land you play after that replaces your board with flying 4/4 dragons, making fetch lands and extra land drop effects extremely efficient, quickly turning a reset into overwhelming pressure that many decks struggle to answer turn after turn
Pull rate from Regular Packs: 1.54% The estimated pull rate for Lillipup (Pulsing Aura) from a Regular Pack is approximately 1.54%, meaning you might need to open around 66 Regular Packs to obtain it
You also get one of nine puzzle cards
Its already noted as the top non-gold card in the set (bleedingcool.com) and has a high desirability ranking
This format consists of Wind-Up Shock Lock , Inzektor , Dino Rabbit and Disaster Dragons , a format many wish to forget because of Number 16: Shock Master and its Shock Lock and how devastating Inzektors could be with Inzektor Dragonfly and Inzektor Hornet