I'll need to look up a few things simultaneously - the archetype overview for Izzet Midrange and the card ID for Slickshot Showoff.
I notice the archetype matched to Legacy. But given the key cards (Steam Vents, Spirebluff Canal, Stormchaser's Talent, Slickshot Show-Off profile), this looks like it could be a Pioneer or Modern archetype. Let me check both formats and also run the specific card-count query.
The query returned no matches. The archetype is confirmed as Legacy Izzet Midrange — let me check if the issue is the format or if maybe Slickshot Show-Off appears in this archetype at all in that window, and also check if Pioneer has its own Izzet Midrange archetype that might be more relevant.
There are three "Izzet Midrange" archetypes across different formats: Legacy (369e2...), Pioneer (6cf303...), and Standard (9b6926...). Slickshot Show-Off with Plot {1}{R} fits Pioneer or Standard best. Let me now run the winrate query for both Pioneer and Standard Izzet Midrange with 4x Slickshot Show-Off.
Standard Izzet Midrange has 1678 matches but the card filter returned 0 wins/losses — this suggests the match result values might be stored differently, or the card_id filter is returning entries but without match result data. Let me investigate the match result values and also check whether Slickshot Show-Off actually appears in any of these Standard Izzet Midrange decks.
The match results use "WIN"/"LOSS"/"DRAW" (not "W"/"L"/"D"). And Standard Izzet Midrange has 325 entries with exactly 4x Slickshot Show-Off. Let me now run the correct winrate query.
Now let me grab sources to cite.
Here are the results for @McFishyMTG:
Standard Izzet Midrange running 4 copies of Slickshot Show-Off in the main deck posted a 57.4% winrate (excluding draws and mirrors) from 1 February to 1 March 2026. That record is built on 949 wins, 705 losses, and 24 draws across 1,678 total matches, drawn from 325 qualifying deck entries. That is a strong above-50% performance, suggesting the full playset configuration is performing well in the current Standard metagame.
Note: The database contains Izzet Midrange archetypes across multiple formats (Legacy, Pioneer, and Standard). Given that Slickshot Show-Off is a Standard-legal card and appears predominantly in Standard Izzet Midrange, the analysis above reflects the Standard format. Neither the Legacy nor Pioneer versions of the archetype had any entries with 4x Slickshot Show-Off in this date window.
Sources: Data drawn from 81 Standard tournaments (63% Melee, 37% MTGO).