{"ops":[{"insert":"Compound Interest is a Sultai combat-trigger deck built around Felix Five-Boots and the idea that small creatures can generate enormous returns when every successful connection produces twice the normal value. The deck begins with cheap evasive creatures such as Slither Blade and Triton Shorestalker, supported by two-mana ramp from Nature’s Lore, Farseek, Rampant Growth, Signets, Talismans, and Sol Ring. These early plays establish the mana needed to reach Felix quickly while also putting creatures onto the battlefield that can immediately exploit his ability. Rather than relying on oversized creatures to win combat, Compound Interest wants its attackers to connect consistently and convert those connections into cards, tokens, mana, or life-total pressure.\nThe deck’s central engine comes online when Felix Five-Boots enters the battlefield. From that point forward, combat-damage triggers effectively compound across the entire board. Bident of Thassa and Reconnaissance Mission turn every successful attacker into doubled card draw, while Ohran Frostfang adds deathtouch and makes each connecting creature draw additional cards. Gix, Yawgmoth Praetor and Dimir Cutpurse provide additional saboteur-style card advantage, while creatures such as Thada Adel, Acquisitor, Thief of Sanity, Nightveil Specter, and Gonti, Night Minister turn combat connections into access to opposing resources. The result is an engine that continually replaces the cards spent developing the board while simultaneously increasing the deck's ability to keep attacking.\nSeveral threats exploit Felix in particularly dramatic ways. Quietus Spike is one of the deck's most explosive finishers: connecting with an opponent causes the Spike's life-halving trigger to occur twice, effectively reducing that player's life total by 75% from that trigger alone. Hydra Omnivore similarly converts one successful attack into damage across the entire table, while Koma, World-Eater can generate a massive number of Serpent tokens from its combat-damage trigger. Lathril, Blade of the Elves can rapidly assemble the creature count needed for her activated ability, while Necropolis Regent turns successful attacks into increasingly threatening creatures. Fireshrieker further increases the deck's ability to generate combat damage and trigger its various saboteur effects.\nEvasion is therefore one of the deck's most important forms of consistency. Slither Blade, Triton Shorestalker, Sun Quan, Lord of Wu, Aqueous Form, Rogue’s Passage, and Whispersilk Cloak all help ensure that attackers actually connect. Sun Quan is particularly valuable once the board becomes crowded, effectively giving the entire army a reliable path through conventional blockers. Whispersilk Cloak combines unblockability with shroud, making it useful for protecting a critical saboteur while ensuring that its combat trigger continues to generate value. Swiftfoot Boots provides another layer of protection for important creatures, while Quietus Spike can turn an otherwise innocuous evasive attacker into an immediate threat that opponents cannot afford to ignore.\nNature’s Will gives the deck another powerful payoff for successful attacks. When creatures connect, it untaps your lands while restricting the defending player's mana, allowing combat to effectively generate additional resources. This is especially valuable because the deck wants to maintain interaction while still committing creatures to combat. Counterspell, Countersquall, An Offer You Can’t Refuse, Assassin’s Trophy, Beast Within, Feed the Swarm, Tear Asunder, and Maelstrom Pulse give the deck ways to answer problematic permanents or protect its momentum. The interaction suite is deliberately flexible rather than overwhelming; Compound Interest generally wants to spend its mana advancing the combat engine and use its interaction to prevent opponents from disrupting a winning position.\nThe deck's biggest vulnerability is that its engine ultimately depends on creatures connecting in combat. A well-timed creature sweeper can remove both the evasive attackers and the payoff creatures that make those attacks valuable, while dense boards of blockers can temporarily shut down combat triggers. The deck also has limited protection against mass destruction and relatively few ways to directly tutor for a particular finisher, making its card-draw engines especially important. Felix's ward provides some protection, but that protection becomes less meaningful as opponents develop their mana. Compound Interest therefore rewards careful threat assessment and disciplined attacks: establish the evasive infrastructure early, deploy Felix when the board can immediately exploit him, protect the creatures that generate the most value, and let every successful connection compound into the next one until the table can no longer keep up.\n"}]}