When Bladecoil Serpent enters the battlefield, for each
![Blue](/Handlers/Image.ashx?size=small&name=U&type=symbol)
![Blue](/Handlers/Image.ashx?size=small&name=U&type=symbol)
spent to cast it, draw a card.
When Bladecoil Serpent enters the battlefield, for each
![Black](/Handlers/Image.ashx?size=small&name=B&type=symbol)
![Black](/Handlers/Image.ashx?size=small&name=B&type=symbol)
spent to cast it, each opponent discards a card.
When Bladecoil Serpent enters the battlefield, for each
![Red](/Handlers/Image.ashx?size=small&name=R&type=symbol)
![Red](/Handlers/Image.ashx?size=small&name=R&type=symbol)
spent to cast it, it gets +1/+0 and gains trample and haste until end of turn.