Each time a new set approaches, the writers of magicthegathering.com get to do a couple weeks of previews, showing off the new cards before you can see them anywhere else
Aggro (Red/White) Red and white synergize to make a fast, aggressive archetype that can win before your opponent can finish setting up, and that's important because it tends to run out of gas when it gets trapped in a longer game
Cleffa is from the Pokmon TCG: Call of Legends set and allows its player to shuffle their hand into their deck and draw six new cards, which will then put Cleffa to sleep
I know some players like Vanguard Suppressor, but I think it underperforms in comparison to the flexibility of Sicarian Infiltrator
We track 595 singles in Kamigawa: Neon Dynasty
Combined with an 89.1% PSA 10 hit rate, this remains one of the most reliable grading plays