Everlasting light

Everlasting light can turn into a swamp for a turn.
Everlasting light gets a time counter every turn you attack. If there is four counters then you must sacrifice it and gain 4 life.
Everlasting light gets +1/-1 every time it attacks.
If everlasting light dies, gain 4 life then next turn lose 5 life unless you pay 1 {b} every turn.
It will do anything to protect.