Super lundi

This land enters tapped. {T}: Add {W}. {1}{W}: This land becomes a 1/5 white Soldier creature until end of turn. It's still a land.

Draw two cards, then discard two cards. Untap up to three lands.

Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it.

This land enters tapped. {T}: Add {R}. {1}{R}: This land becomes a 2/1 red Warrior creature with first strike until end of turn. It's still a land....

{T}, Sacrifice this creature: It deals damage equal to its power to any target.

Echo {2}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay ...

{R}: Target creature gets +1/+0 until end of turn.

Whenever this creature becomes tapped, it deals 1 damage to any target.

Enchant creature Enchanted creature gets +1/+0 for each Mountain you control.

Put all enchantments on top of their owners' libraries.

Untap two target creatures. Each of them gets +1/+1 until end of turn.

Counter target spell that targets a creature.

Target creature gets +0/+4 until end of turn. Cycling {2} ({2}, Discard this card: Draw a card.)

{2}: Regenerate target artifact creature.

{1}{U}, {T}: Put target green creature on top of its owner's library.

Creatures you control have first strike.

Sacrifice any number of creatures. Last-Ditch Effort deals that much damage to any target.

Lava Axe deals 5 damage to target player or planeswalker.

Creatures you control have flying.

You may have this creature assign its combat damage as though it weren't blocked.

Sacrifice a creature: The next time a source of your choice would deal damage to any target this turn, prevent that damage.

Counter target spell unless its controller pays {2}. Cycling {2} ({2}, Discard this card: Draw a card.)

{T}: Target creature you control gains protection from the color of your choice until end of turn.