When Festering Newt dies, target creature an opponent controls gets -1/-1 until end of turn. That creature gets -4/-4 instead if you control a creature named Bogbrew Witch.

Gudul Lurker can’t be blocked.

Megamorph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Flying

{7}{U}: Adapt 4. This ability costs {1} less to activate for each instant and sorcery card in your graveyard. (If this creature has no +1/+1 counters on it, put four +1/+1 counters on it.)

Whenever Archmage’s Newt deals combat damage to a player, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. That card gains flashback {0} until end of turn instead if Archmage’s Newt is saddled. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Saddle 3

{R}: Cinder Crawler gets +1/+0 until end of turn. Activate only if Cinder Crawler is blocked.

{R}: Pyric Salamander gets +1/+0 until end of turn. Sacrifice Pyric Salamander at the beginning of the next end step.

When Wormfang Newt enters the battlefield, exile a land you control.

When Wormfang Newt leaves the battlefield, return the exiled card to the battlefield under its owner’s control.

Whenever Scalding Salamander attacks, you may have it deal 1 damage to each creature without flying defending player controls.

When Amphin Mutineer enters the battlefield, exile up to one target non-Salamander creature. That creature’s controller creates a 4/3 blue Salamander Warrior creature token.

Encore {4}{U}{U} ({4}{U}{U}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

{2}{U}: Target creature can’t be blocked this turn.

Descend 4 — Frilled Cave-Wurm gets +2/+0 as long as there are four or more permanent cards in your graveyard.

{R}: Flowstone Salamander deals 1 damage to target creature blocking it.

Fin-Clade Fugitives can’t be blocked by creatures with power 2 or less.

Encore {4}{G} ({4}{G}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Whenever Xolatoyac, the Smiling Flood enters the battlefield or attacks, put a flood counter on target land. That land is an Island in addition to its other types for as long as it has a flood counter on it.

At the beginning of your end step, untap each permanent you control with a counter on it.

Affinity for artifacts

Artifact landcycling {2} ({2}, Discard this card: Search your library for an artifact land card, reveal it, put it into your hand, then shuffle.)