Vigilance, haste
Kelsien gets +1/+1 for each experience counter you have.
: Kelsien deals 1 damage to target creature you don't control. When that creature dies this turn, you get an experience counter.

(: Add .)

Prototype — 3/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
Flying
At the beginning of combat on your turn, target creature you control gains your choice of flying, vigilance, or lifelink until end of turn.

: You may put a land card from your hand onto the battlefield. If you control ten or more lands, flip this creature.

Whenever you cast a legendary spell, untap Rona.
: Draw a card, then discard a card.
: Transform Rona. Activate only as a sorcery. ( can be paid with either or 2 life.)

Enchant creature
: Enchanted creature gets +1/+1 until end of turn.

When this creature enters, destroy target creature an opponent controls.

Riot (This creature enters with your choice of a +1/+1 counter or haste.)
Other Spiders you control have riot.
Spells and abilities can't be countered.
Damage can't be prevented.

Choose one —
• Draw cards equal to the greatest power among non-Human creatures you control.
• Non-Human creatures you control get +3/+3 until end of turn.

Exile up to one target card from a graveyard. Create a 2/2 black Zombie creature token with decayed. (It can't block. When it attacks, sacrifice it at end of combat.)
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Companion — Each creature card in your starting deck is a Cat, Elemental, Nightmare, Dinosaur, or Beast card. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)
Vigilance
Each other creature you control that's a Cat, Elemental, Nightmare, Dinosaur, or Beast gets +1/+1 and has vigilance.

Destroy target creature or planeswalker.

: Draw a card. Activate only if you created a token this turn.
, , Sacrifice this artifact: Create a 10/10 colorless Eldrazi creature token.

Lifelink, ward
When this creature enters, look at target player's hand. You may choose a card from it. If you do, that player discards that card, then draws a card.

Return target spell to its owner's hand.
Draw a card.

This land enters tapped.
: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Create a 2/2 green Wolf creature token for each Forest you control.

Flying
Haste (This creature can attack and as soon as it comes under your control.)
When this creature enters, it deals 1 damage to each creature with flying your opponents control. Tap those creatures.

: Add . When you spend this mana to cast a spell with mana value 6 or greater, draw a card.
Partner (You can have two commanders if both have partner.)

Return up to X target creatures to their owners' hands, where X is one plus the number of cards named Aether Burst in all graveyards as you cast this spell.