Doomsday

Untap target creature. It gets +2/+2 until end of turn and can block an additional creature this turn.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and T no matter when it came under your control.) Equip 1 (1: Attach to target creature you control. Equip only as a sorcery.)

Flying, first strike If a source would deal damage to an opponent or a permanent an opponent controls, that source deals double that damage to that player or permanent instead. If a source would deal damage to you or a permanent you control, prevent half that damage, rounded up.

1G, T, Discard a card: Creatures you control get +1/+1 and gain trample until end of turn.

B: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.) Swampcycling 2 (2, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)

When this creature enters, create a 1/1 green Elf Warrior creature token.

When this creature enters or leaves the battlefield, choose a land of each basic land type, then destroy those lands.

Reach, vigilance Ruric Thar attacks each combat if able. Whenever a player casts a noncreature spell, Ruric Thar deals 6 damage to that player.