Unspeakable Symbol

Three life buys one counter, and the cost has no ceiling: pay until you run out of life, and the counters keep coming. That open-ended conversion of life into permanent power is the whole bargain, and it cuts both ways. On an evasive creature it ends games in a hurry, building a clock faster than your shrinking life total can lose the race; on the back foot it does nothing but speed your own death. The enchantment shell matters too. Once it resolves it is hard to remove and sits there as a repeatable engine, untethered from the creature it pumps, ready to dump life into whatever survives a board wipe. Black rarely gets to grow a team without a body attached, and this hands that job to a permanent that creature removal cannot touch. The life payment is the only governor on the design, and it is a soft one: the card asks how much of your own life you are willing to spend to win before the opponent does, and trusts the answer to do the work that no tap symbol or counter quota could.