Trample

When Child of Alara dies, destroy all nonland permanents. They can't be regenerated.

Sacrifice Composite Golem: Add {W}{U}{B}{R}{G}.

If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on that creature instead.

When Conclave Mentor dies, you gain life equal to its power.

If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on it instead.

{W}{B}: Destroy target creature blocking or blocked by Cromat.

{U}{R}: Cromat gains flying until end of turn.

{B}{G}: Regenerate Cromat.

{R}{W}: Cromat gets +1/+1 until end of turn.

{G}{U}: Put Cromat on top of its owner's library.

You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast.

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control. Then if that creature has three or more +1/+1 counters on it, transform Hadana's Climb.

(Transforms from Hadana's Climb.)

{T}: Add one mana of any color.

{1}{G}{U}, {T}: Target creature you control gains flying and gets +X/+X until end of turn, where X is its power.

+1: Create a 3/3 Kavu creature token with trample that's all colors.

-3: Choose up to two target creatures. For each of them, put a number of +1/+1 counters on it equal to the number of colors it is.

-6: Return target multicolored card from your graveyard to your hand. If that card was all colors, draw a card and create two Treasure tokens.

Jared Carthalion can be your commander.

Domain -- {5}, {T}: Draw a card. This ability costs {1} less to activate for each basic land type among lands you control.

Flying

You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast.

Legendary creatures you control get +X/+X, where X is the number of legendary creatures you control.

Whenever you cast a legendary spell from your hand, exile cards from the top of your library until you exile a legendary nonland card with lesser mana value. You may cast that card without paying its mana cost. Put the rest on the bottom of your library in a random order.

{R}: All creatures gain trample and haste until end of turn.

{1}{G}: Put a +1/+1 counter on target creature.

{2}{W}: Target player gains 5 life.

{3}{U}: Target player draws a card.

{4}{B}: Put target creature card from a graveyard onto the battlefield under its owner's control.

Flying

Whenever you attack with one or more creatures with counters on them, draw a card.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a legendary spell.

{T}: Add one mana of any color among legendary permanents you control.

{3}, {T}, Exile Plaza of Heroes: Target legendary creature gains hexproof and indestructible until end of turn.

As long as you've put one or more +1/+1 counters on a creature this turn, Sigardian Paladin has trample and lifelink.

{1}{G}{W}: Target creature you control with a +1/+1 counter on it gains trample and lifelink until end of turn.

Timeless Lotus enters the battlefield tapped.

{T}: Add {W}{U}{B}{R}{G}.

Hideaway 5 (When this enchantment enters the battlefield, look at the top five cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Whenever you cast a multicolored spell, create a Treasure token. Then you may pay {W}{U}{B}{R}{G}. If you do, you may play the exiled card without paying its mana cost.