Behold, the "21 Mana 5 Card Infinite Unblockable Combat Damage Combo", starring Walking Ballista as a big shiny sliver. : r/BadMtgCombos
Walking Ballista I Walking Ballista enters the battlefield I with X +1/+1 counters on À 4: Puta +1/+1 counter on Walking Ballista. Remove a +1/+1 counter from Walking É nes 5 Ballista: