Slaughter Pact seems like a fine card, but perhaps not at its best in this particular moment
Next turn, something else dies, then youd have four Compy SwarmCompy Swarms, depending on how many survive
War Historian's last ability starts to apply as soon as it's declared as an attacker that's attacking a battle, and it applies for the entire turn
Finally, Splinter creates a mutagen token any time he or any other non-token card leaves the battlefield
Its a Secret Rare card with a shimmering rainbow finish that makes it stand out from other variants
Cards like The Ozolith are great for catching counters on permanents that would otherwise lose them, and Luxior, Giada's Gift turns any counter-heavy creature into a wildly strong beater