Put X glyph counters on target creature that target Wall blocked this turn, where X is the power of that blocked creature. The creature gains "This creature doesn't untap during your untap step if it has a glyph counter on it" and "At the beginning of your upkeep, remove a glyph counter from this creature."

Target blocking Wall you control gets +10/+0 until end of combat. Prevent all damage that would be dealt to it this turn. Destroy it at the beginning of the next end step.

Choose target Wall creature. At this turn's next end of combat, destroy all creatures that were blocked by that creature this turn.

Choose target Wall creature. Whenever that creature is dealt damage by an attacking creature this turn, you gain that much life.

Cast this spell only after combat.
Destroy all creatures that were blocked by target Wall this turn. They can't be regenerated. For each creature that died this way, put a creature card from the graveyard of the player who controlled that creature the last time it became blocked by that Wall onto the battlefield under its owner's control.

First strike
Creatures with islandwalk can be blocked as though they didn't have islandwalk.

All creatures lose flying.

Target creature gets +0/+X until end of turn, where X is its converted mana cost.

Creatures with plainswalk can be blocked as though they didn't have plainswalk.

: The next time a black or red source of your choice would deal damage to you this turn, prevent that damage.

, Pay 2 life: Draw a card.

, : Put a charge counter on Green Mana Battery.
, Remove any number of charge counters from Green Mana Battery: Add , then add an additional for each charge counter removed this way.

: Target player discards a card at random. Activate this ability only during your turn.

At the beginning of your upkeep, change Halfdane's base power and toughness to the power and toughness of target creature other than Halfdane until the end of your next upkeep.

: Add .
: Target creature loses all landwalk abilities until end of turn.

When Hazezon Tamar enters the battlefield, create X 1/1 Sand Warrior creature tokens that are red, green, and white at the beginning of your next upkeep, where X is the number of lands you control at that time.
When Hazezon leaves the battlefield, exile all Sand Warriors.

One or more target creatures become white until end of turn.

All creatures get -1/-0 until end of turn.

, Sacrifice a creature: Return target creature card from your graveyard to the battlefield. Activate this ability only during your upkeep.