Scoria Elemental

Six power on a one-toughness body is a number that only ever existed to make you pay for it twice: once in mana, once in the constant dread that any incidental ping, any deathtouch chump-block, any blocker at all wipes the threat off the board. The card draws a clean line of descent from the old fragile-beater school (Ball Lightning, Spark Elemental) but inverts the deal those made. Where those traded the body away at end of turn in exchange for haste and a free swing, this one is fully permanent and offers nothing to mitigate the glass: no haste, no evasion, no trample to push the six through a single chump. It must survive a turn cycle before it ever attacks, and surviving a turn cycle at one toughness is precisely the thing the rate is gambling against. What you are buying for five mana is a four-turn clock that gets there fast if it is left completely alone, and dies to the cheapest interaction in the game the moment it is not. That asymmetry, a heavy beatdown gated entirely behind the opponent simply choosing not to spend a single resource, is the whole design, and it is a design red returns to whenever it wants a threat that punishes a tapped-out or empty board while folding instantly to anyone holding up the smallest answer.