Yes, Soul Warden's ability is activated when a creature token enters the battlefield (or "comes into play"). For example, if your opponent has out a Soul Warden and you play a Seige-Gang Commander, your opponent gains four life.
This also applies to any other cards with abilities activated by creatures entering the battlefield, such as Hamletback Goliath.
No, double strike effects do not stack in Magic: The Gathering. If a creature already has double strike, giving it another double strike effect will not have any additional impact on combat.
To remove indestructible from a creature in Magic: The Gathering, you can use cards or effects that specifically state they can remove indestructible from a creature, such as "Turn to Frog" or "Darksteel Mutation." These cards can either change the creature's abilities or put it under a different effect that removes its indestructible status.
To create a creature token in Magic: The Gathering, you need a card or effect that specifically generates creature tokens. This can be done through spells, abilities, or other card effects that explicitly state they create creature tokens. Once you have the card or effect, follow the instructions on it to generate the creature token onto the battlefield.
Enchantments in Magic: The Gathering can stack if they have different names and do not have conflicting effects. Multiple enchantments with different abilities can be on the same creature or player at the same time.
In Magic: The Gathering, the rules for the card Ephemerate allow you to exile a creature you control, then return it to the battlefield at the beginning of the next end step. This can be used to protect your creature from removal spells or trigger enter-the-battlefield effects twice.
In Magic: The Gathering, a creature's abilities can change or be enhanced until the end of the turn through various spells, abilities, or effects. These changes are temporary and only last until the end of the current turn.
When you copy a creature, the token takes the creature's mana cost, colour, printed effects and printed P/T. It does not copy any external effects, bonuses or penalties on that creature, nor anything it is enchanted or equipped with. So the creature tokens created by Followed Footsteps do not themselves come with another Followed Footsteps aura.
A creature that can be kicked will have either a Kicker cost or a Multikicker cost. These are additional costs, paid when the creature spell is cast. If you paid the kicker cost, when the spell resolves, the creature is considered to have been kicked, and will gain any applicable effects.
An indestructible creature in Magic: The Gathering can protect itself from a board wipe effect by having abilities that grant it protection from certain types of spells or effects, or by being able to regenerate or return from the graveyard. Additionally, having a way to give the creature hexproof or shroud can also help protect it from being targeted by board wipe effects.
In Magic: The Gathering, 1/1 counters can be placed on a creature through various card effects or abilities. These counters increase the creature's power and toughness by 1 each. Players can also remove these counters using certain cards or abilities.
In Magic: The Gathering, an aura is a type of card that can be attached to a creature or permanent to give it special abilities or effects. Auras can impact gameplay by enhancing the abilities of the creature they are attached to, providing buffs or debuffs, and influencing strategic decisions during a game.
A player can gain control of a commander in Magic: The Gathering by using cards or abilities that allow them to "steal" or "gain control" of another player's creature, including their commander. This can be done through spells, abilities, or effects that specifically target or take control of creatures on the battlefield.