When Gwen Stacy enters, exile the top card of your library. You may play that card for as long as you control this creature.
: Transform Gwen Stacy. Activate only as a sorcery.

Eluge's power and toughness are each equal to the number of Islands you control.
Whenever Eluge enters or attacks, put a flood counter on target land. It's an Island in addition to its other types for as long as it has a flood counter on it.
The first instant or sorcery spell you cast each turn costs (or ) less to cast for each land you control with a flood counter on it.

(Gain the next level as a sorcery to add its ability.)
Whenever one or more tokens you control enter, draw a card. This ability triggers only once each turn.
: Level 2
When this Class becomes level 2, create a token that's a copy of target token you control.
: Level 3
Creature tokens you control get +2/+2.

Protection from black
This creature enters with three +1/+1 counters on it.
If damage would be dealt to this creature, prevent that damage. Remove a +1/+1 counter from this creature.

Black spells you cast cost less to cast.

Flying
Whenever Ganax or another Dragon you control enters, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")
Choose a Background (You can have a Background as a second commander.)

You have no maximum hand size.

When this creature enters, creatures your opponents control get -2/-2 until end of turn.
Whenever a creature an opponent controls dies, that player loses 2 life.

Flying
Whenever you gain life, put a +1/+1 counter on this creature.
Whenever you put one or more +1/+1 counters on this creature, draw a card. This ability triggers only once each turn.

First strike
When this creature enters, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield, then shuffle.

This land enters tapped unless you control a Mountain or a Forest.
: Add .
, : The next spell you cast this turn can't be countered.

Destroy all creatures. They can't be regenerated.

Double strike
Master Tactician — Whenever one or more tokens you control enter, draw a card.
Chapter Master — : Create two 2/2 white Astartes Warrior creature tokens with vigilance.

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

: Add .
, : Add , , or .

Flying
When Aerid Konstrari enters or dies, create a Heartwood token. (It's a red and green artifact with ": Add or .")
: Create a Heartwood token. Then Aerid Konstrari gets +X/+0 until end of turn, where X is the number of artifacts you control.

: Add .
, , Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

(: Add or .)
This land enters tapped.
When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Whenever you attack, put a shield counter on target attacking creature. Until end of turn, it gains "Whenever this creature deals combat damage to a player, remove a shield counter from it. If you do, draw a card." (If a creature with a shield counter on it would be dealt damage or destroyed, remove a shield counter from it instead.)

When this creature enters, discard two cards, then draw two cards. For each nonland card discarded this way, create a 1/1 red Elemental creature token.
, Exile this card from your graveyard: Create two 1/1 red Elemental creature tokens.