Dinomorphia Reversion (BACH-EN073) [Battle of Chaos]

If you control a "Dinomorphia" Fusion Monster: Pay half your LP and banish 1 Counter Trap from your GY; this effect becomes that Counter Trap's effect when that card is activated. During damage calculation while your LP are 2000 or less, if you would take battle damage: You can banish this card from your GY; you take no battle damage from that battle. You can only activate 1 "Dinomorphia Reversion" per turn.