They will always count the modified Power/Toughness, including the bonus or penalty from any counters or other external effects like Auras or Enchantments. I don't think any card looks at only the printed P/T on a creature in the Battlefield.
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.
When a creature with 0 toughness is on the battlefield in Magic: The Gathering, it is put into its owner's graveyard as a state-based action.
In Magic: The Gathering, counters are used to track various effects on cards, such as 1/1 counters to increase a creature's power and toughness. Players can also use counters to keep track of other effects like poison counters or loyalty counters on planeswalker cards. Counters can impact gameplay by changing the strength of creatures, altering the game state, and creating strategic decisions for players.
In Magic: The Gathering, 1/1 counters can be placed on creatures as a result of certain card effects or abilities. These counters increase the creature's power and toughness by 1 each. Players can place 1/1 counters on creatures during their main phase when they have priority, following the rules and restrictions specified on the cards that allow for the placement of these counters.
Creatures with Wither deal damage as -1/-1 counters instead of usual damage. So in the case of a creature with Power 3 and Wither, instead of dealing 3 damage to another creature, it will place three -1/-1 counters on it instead.
In Magic: The Gathering, combat damage occurs when a creature attacks and is not blocked by another creature. The attacking creature deals damage equal to its power to the defending player or planeswalker. If the attacking creature is blocked, it deals damage to the blocking creature instead. Damage is subtracted from a creature's toughness, and if the damage is equal to or greater than the toughness, the creature is destroyed.
In Magic: The Gathering, the mechanic "hexproof" makes a creature or player unable to be targeted by spells or abilities controlled by opponents. This means that if a creature with hexproof has counters on it, opponents cannot target it with spells or abilities that would add or remove counters.
In Magic: The Gathering, when a creature with rabid bite deals damage to another creature, the targeted creature must be destroyed if its toughness is less than or equal to the power of the attacking creature.
Yes, in Magic: The Gathering, there are cards and abilities that allow you to regenerate a sacrificed creature, bringing it back from the graveyard to the battlefield with a certain amount of health or toughness.
No, Bloodrush is not an instant card in Magic: The Gathering. It is a mechanic that allows you to discard a creature card to give another creature a temporary power and toughness boost.
In Magic: The Gathering, infect damage is a type of damage that causes the player or creature to get poison counters instead of losing life points. When a player or creature with infect deals damage to another player or creature, that player or creature gets poison counters equal to the amount of infect damage dealt. If a player gets 10 or more poison counters, they lose the game.
Giant Growth does not add counters. It only changes power and toughness for one turn and is not a permanent. Proliferate would not effect a creature who Giant Growth had been used on.