M.O.D.O.K.

The static -1/-1 field is the part that decides how this plays. A team-wide shrink on opposing creatures is a soft board sweeper stapled to a body: it kills anything with one toughness on sight, chips everything else, and reduces opposing X/1 tokens to non-resources. Crucially, the penalty only touches creatures your opponents control, so M.O.D.O.K. sits above its own aura at full size while everything across the table erodes. That effect alone would justify the slot, and it demands nothing to keep running. Everything else is a value engine layered on top. Connive as an activated ability paid in life rather than mana is the unusual choice: the card can dig and grow on turns when the mana is committed elsewhere, and the lifelink on the flying body is there to refund what the life payment spends. Each nonland discard leaves a +1/+1 counter, so the loop pushes a small flier toward a real clock while smoothing draws and pitching dead cards. The tension runs between the two halves: the -1/-1 field is a patient attrition tool, while the pay-life connive wants you spending resources to assemble a threat. Two brakes keep the engine honest: the life cost, and the your-turn-only timing, which locks the digging out of the opponent's turn (no drawing for answers on their end step) while still leaving room to fire it at instant speed during your own combat. A card that both suppresses the board and builds its own inevitability is doing two jobs midrange usually splits across separate cards.