MTG Soulflayer Deck by Yuseimax

Whenever this creature enters or attacks, exile target card from a graveyard. Put a +1/+1 counter on this creature. This creature has flying as long as a card exiled with it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Trample, lifelink, haste

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) If a creature card with flying was exiled with this creature's delve ability, this creature has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, reach, trample, and vigilance.

Hexproof (This creature can't be the target of spells or abilities your opponents control.) Cycling {U} ({U}, Discard this card: Draw a card.)

Kicker {2}{G} This spell can't be countered. Hexproof, haste If this creature was kicked, it enters with four +1/+1 counters on it.

Flying Double strike (This creature deals both first-strike and regular combat damage.) Lifelink (Damage dealt by this creature also causes you to gain that much life.) Whenever you gain life, draw a card.

Flying, double strike, vigilance, trample, indestructible

Surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Reveal the top five cards of your library. You may put a creature or land card from among them into your hand. Put the rest into your graveyard.

You gain 2 life, draw two cards, then discard two cards. Flashback {1}{W}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

{T}: Add {G}. Channel — {1}{G}, Discard this card: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

This land enters tapped unless you control two or fewer other lands. {T}: Add {W} or {B}.

This land enters tapped unless you control two or fewer other lands. {T}: Add {U} or {B}.

({T}: Add {U} or {B}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {G} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {G} or {U}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

{T}, Pay 1 life: Add one mana of any color.

This land enters tapped unless it's your first, second, or third turn of the game. {T}: Add {C}. {T}, Pay 1 life: Add one mana of any color.

Each land is a Swamp in addition to its other land types.