There are few cards in Explorer that can properly answer this threat, with the exception of Farewell
Bumbleflower Perrie, the Pulverizer Phelddagrif Rafiq of the Many Ragnar Rigo, Streetwise Mentor Roon of the Hidden Realm Rubinia Soulsinger Shanna, Purifying Blade Shaun & Rebecca, Agents Sophia, Dogged Detective Storvald, Frost Giant Jarl Surris, Silk-Tech Vanguard Tidus, Yuna's Guardian Tocasia, Dig Site Mentor Treva, the Renewer Tuvasa the Sunlit Yuna, Grand Summoner
In Modern, the closest you can get is the referential kicker on Tourach, Dread Cantor
We put one white and two blue in the mana cost, because we wanted both to use X, and card drawing is the more powerful effect
All of its abilities are very strong, but its final 'Mega Flare' ,where it deals a ton of damage to opposing players, can often win you the game on the spot
Lolth however is a lot more interesting with synergies