Whenever River Kelpie or another permanent enters the battlefield from a graveyard, draw a card.
Whenever a player casts a spell from a graveyard, draw a card.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

If was spent to cast this spell, return up to one target creature to its owner's hand. If was spent to cast this spell, target player reveals their hand, you choose a nonland card from it, then that player discards that card. (Do both if was spent.)

: Add . Spend this mana only on costs that contain .

Green creatures you control have trample.

Flying
: Rune-Cervin Rider gets +1/+1 until end of turn.

As Runed Halo enters the battlefield, choose a card name.
You have protection from the chosen card name. (You can't be targeted, dealt damage, or enchanted by anything with that name.)

Enchant creature
As long as enchanted creature is red, it gets +1/+1 and has double strike. (It deals both first-strike and regular combat damage.)
As long as enchanted creature is green, it gets +1/+1 and has trample.

First strike
Wither (This deals damage to creatures in the form of -1/-1 counters.)

Whenever you cast a green spell, Safehold Duo gets +1/+1 until end of turn.
Whenever you cast a white spell, Safehold Duo gains vigilance until end of turn.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

, : Safehold Sentry gets +0/+2 until end of turn. ( is the untap symbol.)

Search your library for a Forest or Plains card, reveal it, and put it into your hand. Then shuffle your library.

(: Add .)
Sapseep Forest enters the battlefield tapped.
, : You gain 1 life. Activate this ability only if you control two or more green permanents.

Take an extra turn after this one. Skip the untap step of that turn.

Put a -1/-1 counter on target creature.

As an additional cost to cast this spell, put a -1/-1 counter on a creature you control.
Draw two cards.

: Scrapbasket becomes all colors until end of turn.

: Add one mana of any color.
: Target creature becomes the color or colors of your choice until end of turn.

Trample
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Wither (This deals damage to creatures in the form of -1/-1 counters.)