Bladecoil Serpent

When Bladecoil Serpent enters the battlefield, for each {U}{U} spent to cast it, draw a card.
When Bladecoil Serpent enters the battlefield, for each {B}{B} spent to cast it, each opponent discards a card.
When Bladecoil Serpent enters the battlefield, for each {R}{R} spent to cast it, it gets +1/+0 and gains trample and haste until end of turn.

当蜷刃巨蛇进战场时，施放它时每支付过一份{U}{U}，便抓一张牌。
当蜷刃巨蛇进战场时，施放它时每支付过一份{B}{B}，每位对手便各弃一张牌。
当蜷刃巨蛇进战场时，施放它时每支付过一份{R}{R}，直到回合结束，它便得+1/+0且获得践踏与敏捷异能。