Flash , Sacrifice an Island: Lochmere Serpent can’t be blocked this turn. , Sacrifice a Swamp: You gain 1 life and draw a card. : Exile five target cards from an opponent’s graveyard. Return Lochmere Serpent from your graveyard to your hand. Activate only as a sorcery.
You can't activate Lochmere Serpent's last ability without targeting five cards in a single opponent's graveyard.
04-10-2019
wotc
Activating Lochmere Serpent's first activated ability after it has become blocked won't cause it to become unblocked.
04-10-2019
wotc
An Island is a land with the subtype Island, not any land that could produce blue mana. For example, Mystic Sanctuary is an Island, but Castle Vantress isn't. Similarly, a Swamp is a land with the subtype Swamp, not any land that could produce black mana.
04-10-2019
wotc
If up to four of the target cards are illegal targets by the time Lochmere Serpent's last ability resolves, the remaining legal targets are exiled and Lochmere Serpent is returned to your hand.
04-10-2019
wotc
If each target card is an illegal target by the time Lochmere Serpent's last ability resolves, the entire ability won't resolve. Lochmere Serpent won't be returned.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.