At the beginning of your upkeep, you gain 2 life. Whenever you gain life, you may pay {1}. If you do, draw a card and each opponent loses 1 life. At the beginning of your upkeep, if Oloro is in the command zone, you gain 2 life.

Islandwalk, swampwalk (This creature can't be blocked as long as defending player controls an Island or a Swamp.) Whenever Wrexial deals combat damage to a player, you may cast target instant or sorcery card from that player's graveyard without paying its mana cost. If that spell would be put into a graveyard, exile it instead.

Whenever an opponent loses life, you gain that much life.