Whenever you attack, target attacking creature can't be blocked this turn. It connives. Then choose another attacking creature with lesser power. That creature gains
double strikeDouble strike is a static ability that modifies the rules for the combat damage step. (See rule 510, “Combat Damage Step.”)
If at least one attacking or blocking creature has first strike (see rule 702.7) or double strike as the combat damage step begins, the only creatures that assign combat damage in that step are those with first strike or double strike. After that step, instead of proceeding to the end of combat step, the phase gets a second combat damage step. The only creatures that assign combat damage in that step are the remaining attackers and blockers that had neither first strike nor double strike as the first combat damage step began, as well as the remaining attackers and blockers that currently have double strike. After that step, the phase proceeds to the end of combat step.
Removing double strike from a creature during the first combat damage step will stop it from assigning combat damage in the second combat damage step.
Giving double strike to a creature with first strike after it has already dealt combat damage in the first combat damage step will allow the creature to assign combat damage in the second combat damage step.
Multiple instances of double strike on the same creature are redundant. (CR 702.4) until end of turn. (To have a creature
conniveCertain spells and abilities instruct a permanent to connive. To do so, that permanent’s controller draws a card, then discards a card. If a nonland card is discarded this way, that player puts a +1/+1 counter on the conniving permanent.
If a permanent is no longer on the battlefield as an effect instructs it to connive, its last known information is used to determine which object connived and who controlled it.
If multiple permanents are instructed to connive at the same time, the first player in APNAP order who controls (or, in the case of a permanent no longer on the battlefield, last controlled; see rule 701.50b) one or more of those permanents chooses one of them and it connives. Then this process is repeated for each remaining instruction to connive.
Connive N is a variant of connive. To have a permanent connive N, the permanent’s controller draws N cards, discards N cards, then puts a number of +1/+1 counters on the permanent equal to the number of nonland cards discarded this way.
If a permanent would connive 0, no connive event occurs. Abilities that trigger whenever a permanent connives won’t trigger.
A permanent “connives” after the process described in either rule 701.50a or 701.50d is complete, even if some or all of those actions were impossible. (CR 701.50), draw a card, then
discardTo discard a card, move it from its owner’s hand to that player’s graveyard.
By default, effects that cause a player to discard a card allow the affected player to choose which card to discard. Some effects, however, require a random discard or allow another player to choose which card is discarded.
If a card is discarded, but an effect causes it to be put into a hidden zone instead of into its owner’s graveyard without being revealed, all values of that card’s characteristics are considered to be undefined. If a card is discarded this way to pay a cost that specifies a characteristic about the discarded card, that cost payment is illegal; the game returns to the moment before the cost was paid (see rule 733, “Handling Illegal Actions”). (CR 701.9) a card. If you discarded a nonland card, put a +1/+1
counterTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) on that creature.)